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A153525 Number of planar n X n X n binary triangular grids with no more than 4 ones in any 3 X 3 X 3 subtriangle. 0
1, 2, 8, 57, 775, 19641, 921690, 80625050, 13124722225, 3973078785189, 2237747461311054, 2344793549245488048, 4570701601942028573011, 16575255948705837833863791, 111824026459437969673639006613 (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: A153558 A027335 A133686 * A153553 A191481 A229529

Adjacent sequences:  A153522 A153523 A153524 * A153526 A153527 A153528

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 01 2009

STATUS

approved

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Last modified June 18 06:56 EDT 2019. Contains 324203 sequences. (Running on oeis4.)