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A153963 Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 8 ones in any 5 X 5 X 5 subtriangle. 0
1, 2, 4, 16, 61, 331, 2182, 26179, 323131, 7261166, 162366708, 6677383044, 277240875794, 21086244209472, 1619660339949369, 226006979439621982 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
CROSSREFS
Sequence in context: A053349 A228626 A152876 * A153960 A339648 A005027
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 03 2009
STATUS
approved

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Last modified June 21 06:38 EDT 2024. Contains 373540 sequences. (Running on oeis4.)