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A154093 Number of planar triangular n X n X n nonnegative integer grids symmetric under 120 degree rotation with every similarly oriented 5 X 5 X 5 subtriangle summing to 15. 0
126, 1131, 9526, 8779, 13757, 78476, 63531, 47267, 239549, 59060 (list; graph; refs; listen; history; text; internal format)
OFFSET

5,1

LINKS

Table of n, a(n) for n=5..14.

CROSSREFS

Sequence in context: A151989 A318626 A104678 * A172139 A194717 A002953

Adjacent sequences:  A154090 A154091 A154092 * A154094 A154095 A154096

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 04 2009

STATUS

approved

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Last modified May 27 05:48 EDT 2020. Contains 334649 sequences. (Running on oeis4.)