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A153921 Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 3 ones in any 3 X 3 X 3 subtriangle. 0

%I

%S 1,2,4,10,28,148,714,6039,49623,697824,9570390,228608398,5268376882,

%T 211052632687,8181458661819,550685739585810,35868897568521948,

%U 4059582510922093828,444431993377350866570,84536428851931450778591

%N Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 3 ones in any 3 X 3 X 3 subtriangle.

%K nonn

%O 0,2

%A _R. H. Hardin_ Jan 03 2009

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Last modified February 26 09:49 EST 2020. Contains 332277 sequences. (Running on oeis4.)