A154093 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 15.

126, 1131, 9526, 8779, 13757, 78476, 63531, 47267, 239549, 59060

Offset

5,1

Links

Table of n, a(n) for n=5..14.

Crossrefs

Sequence in context: A151989 A318626 A104678 * A172139 A194717 A002953

Adjacent sequences: A154090 A154091 A154092 * A154094 A154095 A154096

Keyword

nonn

Author

R. H. Hardin, Jan 04 2009

Status

approved