A121308 - OEIS

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A121308

Number of 2-anisohedral polyiamonds of order n.

0

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

(list; graph; refs; listen; history; text; internal format)

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