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A154074 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 9. 0
35, 159, 734, 695, 675, 1988, 1941, 881, 2067, 949, 707, 1003, 551 (list; graph; refs; listen; history; text; internal format)
OFFSET

5,1

LINKS

Table of n, a(n) for n=5..17.

CROSSREFS

Sequence in context: A133534 A005339 A045614 * A260867 A015219 A195545

Adjacent sequences:  A154071 A154072 A154073 * A154075 A154076 A154077

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 04 2009

STATUS

approved

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Last modified February 24 01:16 EST 2020. Contains 332195 sequences. (Running on oeis4.)