A153568 - OEIS

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A153568

Number of planar n X n X n binary triangular grids with no more than 6 ones in any similarly oriented 5 X 5 X 5 subtriangle.

1

1, 2, 8, 64, 848, 9949, 298247, 16406435, 1545911495, 236576023548, 58010755690276, 25220215282781623

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

OFFSET

0,2

LINKS

Table of n, a(n) for n=0..11.

CROSSREFS

Sequence in context: A139679 A005640 A153540 * A153531 A153560 A321059

Adjacent sequences: A153565 A153566 A153567 * A153569 A153570 A153571

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 01 2009

STATUS

approved