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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 4 X 4 X 4 subtriangle.
0

%I #5 Apr 28 2021 00:10:15

%S 1,2,8,64,1023,32677,2085852,266072543,67825229274,34550724745098,

%T 35172054875041935,71550556026385872065,290872707932040590253421,

%U 2363021239114367414096994640,38362505723755284120569710614165

%N Number of planar n X n X n binary triangular grids with no more than 9 ones in any similarly oriented 4 X 4 X 4 subtriangle.

%K nonn

%O 0,2

%A _R. H. Hardin_, Jan 01 2009