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%I #5 Apr 28 2021 00:04:23
%S 1,2,4,7,11,16,38,113,342,975,2636,8729,35249,159811,757035,3630603,
%T 19165047,115453377,782498885,5793617152,45722686214,390614558026,
%U 3684092364605,38520543111851,443271652337403,5554115003205511
%N Number of planar n X n X n binary triangular grids with no more than 1 one in any 5 X 5 X 5 subtriangle.
%K nonn
%O 0,2
%A _R. H. Hardin_, Jan 01 2009
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