A121308 Number of 2-anisohedral polyiamonds of order n.

0, 0, 0, 0, 0, 0, 0, 0, 5, 23, 43, 38, 85, 274, 259, 324, 326, 1344, 591, 2348, 1466, 8240, 1773, 16608, 3408, 48372, 5386, 95189, 9351, 330833

Offset

1,9

Links

Table of n, a(n) for n=1..30.

Joseph Myers, Polyomino tiling

Crossrefs

Sequence in context: A062341 A176251 A293533 * A222088 A146467 A053518

Adjacent sequences: A121305 A121306 A121307 * A121309 A121310 A121311

Keyword

nonn

Author

N. J. A. Sloane, Aug 25 2006

Extensions

Adjusted to offset 1 and a(29) and a(30) added by Joseph Myers, Nov 21 2010

Status

approved