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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.
0
1, 2, 8, 64, 848, 9949, 294074, 15816643, 1445464075, 209860060542
OFFSET
0,2
CROSSREFS
Sequence in context: A347012 A139679 A005640 * A153568 A153531 A153560
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 01 2009
STATUS
approved