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%I A153970 #5 Oct 02 2025 21:34:06
%S A153970 1,2,2,4,7,12,22,77,142,532,1881,6680,23965,163600,576849,3866824,
%T A153970 26635009,176366633,1204710337,15393505413,104674234457,1334666498849,
%U A153970 17456897665295,221752333314343,2885843552520634,70795502834846238
%N A153970 Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with no more than 9 ones in any 5 X 5 X 5 subtriangle.
%K A153970 nonn
%O A153970 0,2
%A A153970 _R. H. Hardin_, Jan 03 2009

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