A153529 Number of planar n X n X n binary triangular grids with no more than 4 ones in any 4 X 4 X 4 subtriangle.

1, 2, 8, 57, 386, 5731, 147855, 6014889, 363445587, 37142795822, 6258607048833, 1695497689501538

Offset

0,2

Links

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

Crossrefs

Sequence in context: A256724 A153538 A153566 * A153558 A027335 A133686

Adjacent sequences: A153526 A153527 A153528 * A153530 A153531 A153532

Keyword

nonn

Author

R. H. Hardin, Jan 01 2009

Status

approved