A154078 Number of planar triangular n X n X n nonnegative integer grids with mirror symmetry about one altitude with every similarly oriented 4 X 4 X 4 subtriangle summing to 10.

378, 3930, 3121, 12164, 6241, 21168, 6550, 13276, 3181, 6207, 1260, 3165, 1024, 3226, 983, 2793, 935, 3076, 935, 2781, 935, 3076, 935, 2781, 935, 3076, 935, 2781, 935, 3076, 935, 2781, 935, 3076, 935, 2781, 935, 3076, 935, 2781, 935, 3076, 935, 2781, 935, 3076

Offset

4,1

Comments

Pattern 935 3076 935 2781 starts at n=20 and continues through at least n=52.

Links

Table of n, a(n) for n=4..49.

Crossrefs

Sequence in context: A224337 A239174 A235761 * A047632 A033699 A235544

Adjacent sequences: A154075 A154076 A154077 * A154079 A154080 A154081

Keyword

nonn

Author

R. H. Hardin Jan 04 2009

Status

approved