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A154094 Number of planar triangular n X n X n nonnegative integer grids with mirror symmetry about one altitude with every similarly oriented 5 X 5 X 5 subtriangle summing to 15. 0
22308, 168794, 505725, 1434840, 2268199, 4350854, 6106648, 6385418, 5120411 (list; graph; refs; listen; history; text; internal format)
OFFSET

5,1

LINKS

Table of n, a(n) for n=5..13.

CROSSREFS

Sequence in context: A252774 A253042 A216202 * A206656 A329787 A224648

Adjacent sequences:  A154091 A154092 A154093 * A154095 A154096 A154097

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 04 2009

STATUS

approved

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Last modified May 27 03:03 EDT 2020. Contains 334647 sequences. (Running on oeis4.)