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.

35, 159, 734, 695, 675, 1988, 1941, 881, 2067, 949, 707, 1003, 551

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