OFFSET
1,2
REFERENCES
R. A. Epstein, The Theory of Gambling and Statistical Logic, 1977, Academic Press, ISBN 0-12-240760-1 (pages 362-369 discuss polyforms, including Epstein's polyominoids).
LINKS
M. Keller, Counting polyforms
CROSSREFS
KEYWORD
nonn,nice,more
AUTHOR
N. J. A. Sloane, James A. Sellers, Aug 28 2000
EXTENSIONS
Corrected and extended by Joseph Myers, Sep 24 2002
STATUS
approved