A153558 Number of planar n X n X n binary triangular grids with no more than 4 ones in any similarly oriented 4 X 4 X 4 subtriangle.

1, 2, 8, 57, 386, 5902, 157442, 6760327, 444864808, 50253619003, 9489610137995, 2943731871028561, 1496950842394800744

Offset

0,2

Links

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

Crossrefs

Sequence in context: A153538 A153566 A153529 * A027335 A133686 A369193

Adjacent sequences: A153555 A153556 A153557 * A153559 A153560 A153561

Keyword

nonn

Author

R. H. Hardin, Jan 01 2009

Status

approved