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A197466
Number of one-sided poly-[4.8^2]-tiles (holes allowed) with n cells (division into triangles is significant).
2
1, 2, 3, 8, 14, 36, 80, 206, 494, 1259, 3144, 8085, 20676, 53635, 139144, 363630, 952148, 2504626, 6603367, 17463287
OFFSET
1,2
REFERENCES
Branko Grünbaum and G. C. Shephard, Tilings and Patterns. W. H. Freeman, New York, 1987, Sections 2.7, 6.2 and 9.4.
CROSSREFS
Sequence in context: A298343 A201361 A129700 * A049344 A080877 A007165
KEYWORD
hard,nonn
AUTHOR
Joseph Myers, Oct 15 2011
STATUS
approved