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A002214
Number of unrooted hexagonal polyominoes with n cells and no reflections allowed.
(Formerly M1750 N0694)
+0
2
1, 1, 2, 7, 18, 64, 226, 856, 3306, 13249, 53794, 222717, 933438, 3960487, 16970362, 73381453, 319817670, 1403875491, 6202064928, 27559699507, 123115236582, 552654175124, 2491870281372, 11281732737898, 51270697159708
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.
AT&T Labs Research
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