|
%I #3 Mar 31 2012 12:35:21
%S 56,164,248,207,155,94,34,28,28,28,28,28,28,28,28,28,28,28,28,28,28,
%T 28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,
%U 28,28,28,28,28,28,28,28,28,28,28,28,28,28
%N Number of planar triangular n X n X n nonnegative integer grids with every similarly oriented 3 X 3 X 3 subtriangle summing to 3.
%C Value 28 starts at n=10 and continues through at least n=60.
%e Maximal zeros solution for n=10
%e ...........0
%e ..........0.2
%e .........1.0.0
%e ........1.0.1.0
%e .......0.0.1.1.0
%e ......0.2.0.0.0.2
%e .....1.0.0.1.1.0.0
%e ....1.0.1.0.1.0.1.0
%e ...0.0.1.1.0.0.1.1.0
%e ..0.2.0.0.0.2.0.0.0.2
%K nonn
%O 3,1
%A _R. H. Hardin_ Jan 04 2009
|
