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A153535
Number of planar n X n X n binary triangular grids with no more than 1 one in any 5 X 5 X 5 subtriangle.
0
1, 2, 4, 7, 11, 16, 38, 113, 342, 975, 2636, 8729, 35249, 159811, 757035, 3630603, 19165047, 115453377, 782498885, 5793617152, 45722686214, 390614558026, 3684092364605, 38520543111851, 443271652337403, 5554115003205511
OFFSET
0,2
CROSSREFS
Sequence in context: A108895 A146929 A146921 * A116615 A053145 A192589
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 01 2009
STATUS
approved