A153540 Number of planar n X n X n binary triangular grids with no more than 6 ones in any 5 X 5 X 5 subtriangle.

1, 2, 8, 64, 848, 9949, 294074, 15816643, 1445464075, 209860060542

Offset

0,2

Links

Table of n, a(n) for n=0..9.

Crossrefs

Sequence in context: A347012 A139679 A005640 * A153568 A153531 A153560

Adjacent sequences: A153537 A153538 A153539 * A153541 A153542 A153543

Keyword

nonn

Author

R. H. Hardin, Jan 01 2009

Status

approved