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A153524 Number of planar n X n X n binary triangular grids with no more than 3 ones in any 3 X 3 X 3 subtriangle. 0
1, 2, 8, 42, 418, 7166, 196648, 9262421, 735124501, 97462705054, 21772941967902, 8177116027167826, 5158458258244584078, 5470968994479723869739, 9752808741716616515809575 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..14.

CROSSREFS

Sequence in context: A002856 A093461 A191994 * A153552 A295199 A191479

Adjacent sequences:  A153521 A153522 A153523 * A153525 A153526 A153527

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 01 2009

STATUS

approved

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Last modified July 21 22:02 EDT 2019. Contains 325210 sequences. (Running on oeis4.)