A153560 Number of planar n X n X n binary triangular grids with no more than 6 ones in any similarly oriented 4 X 4 X 4 subtriangle.

1, 2, 8, 64, 848, 22202, 1109397, 104534239, 18430578601, 6145119518391, 3869729452665295, 4596597483881683039, 10296742221918199977665

Offset

0,2

Links

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

Crossrefs

Sequence in context: A153540 A153568 A153531 * A321059 A331957 A134956

Adjacent sequences: A153557 A153558 A153559 * A153561 A153562 A153563

Keyword

nonn

Author

R. H. Hardin, Jan 01 2009

Status

approved