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.

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

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: A354562 A013811 A013892 * A064351 A366205 A345148

Adjacent sequences: A154083 A154084 A154085 * A154087 A154088 A154089

Keyword

nonn

Author

R. H. Hardin Jan 04 2009

Status

approved