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%I #5 Apr 28 2021 00:07:14
%S 1,2,7,22,138,1319,16363,320308,9347304,395198881,24967400825,
%T 2338902316070,323464731245071,66313728025965398,20135677790841925784,
%U 9050070037089457390796,6023866973628415403731955
%N Number of planar n X n X n binary triangular grids with no more than 2 ones in any similarly oriented 3 X 3 X 3 subtriangle.
%K nonn
%O 0,2
%A _R. H. Hardin_, Jan 01 2009
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