OFFSET
1,3
REFERENCES
M. Gardner, Problem 7 from Chapter 19, Sphere Packing, Lewis Carroll, and Reversi, Cambridge University Press, 2009, pages 245-246. Answers, pages 254-256. (Revised edition of New Mathematical Diversions, Mathematical Association of America, 1995, page 223. Answers, pages 230-232.)
EXAMPLE
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
William Rex Marshall, Jun 15 2012
STATUS
approved