A154091 - OEIS

A154091

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 14.

%I #3 Mar 31 2012 12:35:22

%S 15444,106446,294845,765100,1132408,1998601,2586773,2366585,1788843,

%T 1141243,542455

%N 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 14.

%K nonn

%O 5,1

%A _R. H. Hardin_ Jan 04 2009