A153527 Number of planar n X n X n binary triangular grids with no more than 2 ones in any 4 X 4 X 4 subtriangle.

1, 2, 7, 22, 56, 295, 2298, 20666, 194155, 2700996, 51521837, 1239525245, 36497293583, 1416042960537, 72342354105238, 4760390278139941, 400064661916351750

Offset

0,2

Links

Table of n, a(n) for n=0..16.

Crossrefs

Sequence in context: A007344 A153536 A153564 * A153556 A323228 A348290

Adjacent sequences: A153524 A153525 A153526 * A153528 A153529 A153530

Keyword

nonn

Author

R. H. Hardin, Jan 01 2009

Status

approved