Contents of Volume 19,

**Journal of Recreational Mathematics**# Number 1

“Third Order Gnomon-Magic Squares with Distinct Prime
Elements,” by Charles W. Trigg

“Vestpocket Bibliographies No. 11: Logic, Artificial
Intelligence, and Mathematical Foundations,” by William L,. Schaaf

“An Arithmetic Kabob,” by Charles W. Trigg

“A Decade of Years Imbedded in Squares,” by Charles W. Trigg

“K-Fold Isotopic Amicable Numbers,” by Mariano Garcia

“’Speaking of Paradoxes . . .’ or Are We?” by Laurence
McGilvery

“Solution to An Arithmetic Kabob,” by Charles W. Trigg

“Absolute Difference Sums of Third-Order Toroids,” by
Charles W. Trigg

“A Prime Magic Square for the Prime Year 1987,” by Allan Wm.
Johnson, Jr.

“SIM on a Microcomputer,” by Thomas E. Moore

“Truncatable Primes,” by Chris K. Caldwell

“Nine-Digit Prime Sets,” by Charles W. Trigg

“Palindromic Smith Numbers,” by Wayne L. McDaniel

“The Size of Prime Factorials,” by Harvey Dubner

“Repfigit Numbers,” by Michael Keith

Letter to the Editor

“The Sisyphus String,” by John Michael Schram

“Identities with the Same Digits on Both Sides,” by Charles
W. Trigg

“Computer Analysis of Nonstandard BINGO Probabilities,” by
Michael Henry, James Smith and George Trapp, Jr.

“Hexamorphic Numbers,” by Charles W. Trigg

“Generating a Pandiagonal Magic Square of Order Eight,” by
John Robert Hendricks

Letter to the Editor

Book Reviews, edited by Charles W. Trigg

Alphametics and Solutions to 18(1) Alphametics, edited by
Steven Kahan

Problems and Conjectures, edited by Joseph S. Madachy

Solutions to Problems and Conjectures, edited by Joseph S.
Madachy

Solvers’ List

# Number 2

“Vestpocket Bibliographies No. 12: Magic Squares and Cubes,
Latin Squares, Mystic Arrays and Number Patterns,” by William L. Schaaf

“The Heliotropic Hiker – Pursuit Without Capture,” by
Sherman Gerhard

“Second-Order Additive Dyad Bracelets in Base Five,” by
Charles W. Trigg

Conferences To Be Held

“Partial Sums of e and π,” by Jean Meeus

“The Pie Function,” by Michael Keith

“Octamorphic Numbers,” by Charles W. Trigg

“Some Very Deep Mathematical Problems That Anyone Can
Understand,” by Steven Goldberg

Letter to the Editor

“A Ninth-Order Magic Cube,” by John Robert Hendricks

“Mathematical Show-Me’s,” by Charles W. Trigg

“Primes with Kaprekar Periods,” by Edward Kitchen

“Permutable Primes,” by Chris K. Caldwell

“Smith Numbers Congruent to 4(Mod 9),” by Samuel Yates

“Super Super Large Numbers,” by Alexander A. Berezin

Alphametics and Solutions to 18(2) Alphametics, edited by
Steven Kahan

Problems and Conjectures, edited by Joseph S. Madachy

Solutions to Problems and Conjectures, edited by Joseph S.
Madachy

Solvers’ List

# Number 3

“The Boys of Summer Are the Chis of Spring,” by Jill E.
Erickson, Elizabeth A. Loring, Lisa B. Seiden and Paul M. Sommers

“A Remarkable Group of Gnomon-Antimagic Squares,” by Charles
W. Trigg

“An Application of Linear Equations to the VCR,” Gregory N.
Fiore

“The Convergence of the Sisyphus String,” by James P.
Burling

“Reflexive Digital Strings and Singularity Sequences,” by
John Michael Schram

“Unique Nine-Digit Representations,” by Charles W. Trigg

“Anatomy of a Misconception: The Super Bowl and the Stock
Market,” by Steven Goldberg

“Note on ‘Squaring the Circle’,” by W. Raymond Griffin

“Permutation Twin Cubes,” by Charles W. Trigg

“Neighboring Pairs in Lotto,” by Walter W. Funkenbusch

“Factorial and Primorial Primes,” by Harvey Dubner

“Constructing Pandiagonal Magic Squares of Odd Order: Part
I,” by John Robert Hendricks

“Constructing Pandiagonal Magic Squares of Odd Order: Part
II,” by John Robert Hendricks

“Magic Squares With Duplicate Entries,” by Victor G. Feser

“Algebraic Forms for Order Three Magic Squares/Cubes,” by
Allan William Johnson, Jr.

“Absolute Differences in Third-Order Triangular Arrays,” by
Charles W. Trigg

“Four Circles in a Parallelogram,” by Hiroshi Okumura

Alphametics and Solutions to 18(3) Alphametics, edited by
Steven Kahan

Problems and Conjectures, edited by Joseph S. Madachy

Solutions to Problems and Conjectures, edited by Joseph S.
Madachy

Solvers’ List

# Number 4

“Eye-Pothesis Testing: Another Look at the 1986 World
Series,” by Andrew Cornish, Charles Fiedler, Brian S. Foss and Paul M. Sommers

“Word Equations,” by Charles W. Trigg

“Career Lengths and Playing Position in Major League
Baseball: Any Connection?” by Paul M. Sommers

An “Extraordinary Prime” Error

“A Structural Approach to the 1987 Annual Puzzle,” by Oliver
D. Anderson

“Hexominoes in Rectangles,” by P. J. Torbijn and Jean Meeus

“Commemorating the Constitution,” by Allan Wm. Johnson, Jr.

“Four-Digit Primes with Centrally Imbedded Repdigits,” by
Charles W. Trigg

“N-Team, M-Loss Elimination Tournaments,” by Alan C.
Benander and Barbara A. Benander

“How Odd the Smiths Are!” by Samuel Yates

“Back Door Entrance to the Last Two Digits of a Prime’s
Period,” by W. Raymond Griffin

“1987 Cornucopia,” by Charles W. Trigg

“Creating Pan-3-Agonal Magic Cubes of Odd Order,” by John
Robert Hendricks

“Youth Will Be Served,” by Michael D. Gregorich and Paul M.
Sommers

“Palindromic Hexagonal Numbers,” by Charles W. Trigg

Book Reviews

Alphametics and Solutions to 18(4) Alphametics, edited by
Steven Kahan

Problems and Conjectures, edited by Joseph S. Madachy

Solutions to Problems and Conjectures, edited by Joseph S.
Madachy

Solvers’ List

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