Contents of Volume 27,

**Journal of Recreational Mathematics**# Number 1

“A Tale of Two Goats . . . And a Car, Or the Importance of
Assumptions in Problem Solutions,” by Allan H. Bohl, Matthew J. Liberatore and
Robert Nydick

“Variations on Perfect Digital Invariants,” by Dean Morrow

“On the Existence of Cakemorphic Integers,” by Clifford A.
Pickover and Michael Angelo

“Prime Quadruplets,” by G. John Stevens

“Towards a 10 x 10 Word Square,” by Frank Rubin

“On Two Equations Related to Iterated Exponentiation,” by R.
M. Sternheimer

“Magic Triangular Years,” by Kishor N. Gordhandas

“Squares in Base Six With Digits Once Repeated,” by Charles
W. Trigg

“Properties of the Prime-Number Triplets and Quadruplets,
II,” by R. M. Sternheimer

“The Near-Repunit Primes 1(sub)(n-k-1)0(sub)(1)1(sub)k,” by
Chris K. Caldwell and Harvey Dubner

Letter to the Editor

“Grateful Data Analysis,” by Gregory J. Pitts and Paul M.
Sommers

Letter to the Editor

Book Reviews, edited by Charles Ashbacher

Alphametics and Solutions to 26(1) Alphametics, edited by
Steven Kahan

“The Number 953,” by T. V. Padmakumar

Problems and Conjectures, edited by Joseph S. Madachy

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

“The Ratio 111/121,” by David G. Armstrong

Solvers’ List

# Number 2

“Pascal’s Beast,” by Clifford A. Pickover

“Prime Words,” by Chris K. Caldwell

“Stamps of Approval,” by Paul M. Sommers

“An Empirical Assessment of Presidential Veto Power,” by
Daniel P. Hanson, Jonathan E. Parr and Paul M. Sommers

Letters to the Editor

“Tessellations with Hyperbolic Squares,” by Raymond F.
Tennant

“Neckties, Wallets, and Money for Nothing,” by Aaron C.
Brown

“Inlaid Pandiagonal Magic Squares,” by John R. Hendricks

“On Tiling Deficient Rectangular Boards with Trominoes,” by
Christopher Jepsen

Book Reviews, edited by Charles Ashbacher

Alphametics and Solutions to 26(2) Alphametics, edited by
Steven Kahan

Errata

Problems and Conjectures, edited by Joseph S. Madachy

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

Solvers’ List

# Number 3

“A Compact Strategy for Numerical Tic-Tac-Toe,” by Scotty
Orr and Curtis Cooper

“The 2N Problem,” by Clifford A. Pickover and George C.
Runger

“Inlaid Magic Squares,” by John R. Hendricks

“More Magic Squares,” by Emanuel Emanoulidis

“More Multiplication Magic Squares,” by Emanuel Emanoulidis

“Determination of All Pan-Digital Sums with Two Summands,”
by David Singmaster

“Generalized Knights and Hamiltonian Tours,” by George P.
Jelliss

“The Vegetable Veto,” by Paul M. Sommers

“What Do 36 and 1314 Have in Common?” by S. Alex Siklos

“Recurring Digit-to-Digit Invariants,” by Dean C. Morrow

Book Reviews, edited by Charles Ashbacher

Alphametics and Solutions to 26(3) Alphametics, edited by
Steven Kahan

Problems and Conjectures, edited by Joseph S. Madachy

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

Erratum

Solvers’ List

# Number 4

“The Number Series Solution,” by Kevin G. Abelbeck

Letter to the Editor (The Smarandache Function), from
Charles Ashbacher

“A Note on the Minimal Tour Sequencing Problem with Forced
Tour Sequence Positions,” by William P. Allman

Errata

“On An Nth Prime Formula,” by Sol Weintraub

“Almost Perfect Odd Numbers,” by Harrison M. Brown and Henry
F. Fliegel

“Five,” by Clifford A. Pickover

“Touring M x N Boards,” by Renee F. Bourgeois

“An Extension to Polygram Shapes and Some New Dissections,”
by C. Stuart Elliott

“A Result and a Conjecture on Digit Sum Sequences,” by Gary
E. Stevens and L. Gerald Hunsberger

Book Reviews, edited by Charles Ashbacher

Alphametics and Solutions to 26(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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