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A153565 Number of planar n X n X n binary triangular grids with no more than 3 ones in any similarly oriented 5 X 5 X 5 subtriangle. 0
1, 2, 8, 42, 176, 576, 5196, 73620, 1358751, 28558756, 692751617, 26643595004, 1466710451867, 108327240281718, 10438694555033407 (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: A330870 A342152 A153537 * A153528 A153557 A231103

Adjacent sequences:  A153562 A153563 A153564 * A153566 A153567 A153568

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 01 2009

STATUS

approved

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Last modified October 25 09:15 EDT 2021. Contains 348239 sequences. (Running on oeis4.)