A154089 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 13.

10296, 64397, 161040, 382854, 515649, 859348, 1018677, 822030, 546876, 304400, 132626, 47650, 14709, 8418, 4649, 4432, 2800, 3706, 2562, 3674, 2404, 2404, 2404, 2404

Offset

5,1

Comments

Value 2404 starts at n=25 and continues through at least n=28.

Links

Table of n, a(n) for n=5..28.

Crossrefs

Sequence in context: A254984 A241788 A187937 * A227410 A227411 A100502

Adjacent sequences: A154086 A154087 A154088 * A154090 A154091 A154092

Keyword

nonn

Author

R. H. Hardin Jan 04 2009

Status

approved