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A153945
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Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 5 ones in any 5 X 5 X 5 subtriangle.
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0
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1, 2, 4, 15, 38, 116, 499, 3634, 26242, 291832, 2965112, 51213790, 844607038, 23147940890, 598064925200, 25057845860011, 1027607776126888
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OFFSET
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0,2
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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