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A154086 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 12. 0
6864, 38731, 89236, 192947, 244956, 380962, 449908, 332543, 208807, 111992, 56454, 30336, 15354, 12787, 12323, 12236, 14364, 12235, 12235, 12235, 12235, 14364, 12235, 12235, 12235, 12235, 14364, 12235, 12235, 12235, 12235, 14364, 12235, 12235, 12235 (list; graph; refs; listen; history; text; internal format)
OFFSET

5,1

COMMENTS

Pattern 14364 12235 12235 12235 12235 starts at n=21 and continues through at least n=52.

LINKS

Table of n, a(n) for n=5..39.

CROSSREFS

Sequence in context: A114772 A013811 A013892 * A064351 A062678 A018848

Adjacent sequences:  A154083 A154084 A154085 * A154087 A154088 A154089

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 04 2009

STATUS

approved

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Last modified October 13 23:39 EDT 2019. Contains 327983 sequences. (Running on oeis4.)