A153565 Number of planar n X n X n binary triangular grids with no more than 3 ones in any similarly oriented 5 X 5 X 5 subtriangle.

1, 2, 8, 42, 176, 576, 5196, 73620, 1358751, 28558756, 692751617, 26643595004, 1466710451867, 108327240281718, 10438694555033407

Offset

0,2

Links

Table of n, a(n) for n=0..14.

Crossrefs

Sequence in context: A364707 A342152 A153537 * A153528 A153557 A231103

Adjacent sequences: A153562 A153563 A153564 * A153566 A153567 A153568

Keyword

nonn

Author

R. H. Hardin, Jan 01 2009

Status

approved