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A153566 Number of planar n X n X n binary triangular grids with no more than 4 ones in any similarly oriented 5 X 5 X 5 subtriangle. 0
1, 2, 8, 57, 386, 1941, 28361, 697630, 24981538, 1168812802, 71029483178, 7171360955838, 1116266181380655 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..12.

CROSSREFS

Sequence in context: A345677 A256724 A153538 * A153529 A153558 A027335

Adjacent sequences:  A153563 A153564 A153565 * A153567 A153568 A153569

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 01 2009

STATUS

approved

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Last modified December 2 03:43 EST 2021. Contains 349437 sequences. (Running on oeis4.)