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Number of planar n X n X n binary triangular grids with no more than 9 ones in any similarly oriented 5 X 5 X 5 subtriangle.
0

%I #5 Apr 28 2021 00:11:14

%S 1,2,8,64,1023,27824,1518130,161027087,32975856442,12956875592101,

%T 9739126432448652

%N Number of planar n X n X n binary triangular grids with no more than 9 ones in any similarly oriented 5 X 5 X 5 subtriangle.

%K nonn

%O 0,2

%A _R. H. Hardin_, Jan 01 2009