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Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with no more than 11 ones in any 5 X 5 X 5 subtriangle.
0

%I #3 Mar 31 2012 12:35:21

%S 1,2,2,4,8,12,26,101,183,703,2877,10411,40654,329616,1193895,9029186,

%T 73784076,520396717,3984125165,63450006981,453313410587,6773173674923,

%U 109501240761989,1529036617116906,23146045371160181,731081927354538564

%N Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with no more than 11 ones in any 5 X 5 X 5 subtriangle.

%K nonn

%O 0,2

%A _R. H. Hardin_ Jan 04 2009