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%I #6 Apr 20 2020 19:50:01
%S 0,80,13904,7002040,12637025328,88082672552208,2456638851763181776,
%T 279573979783982763379528,131383670545605944288719844352,
%U 256961574793195204388371517319842144
%N Number of n X n 0..3 arrays with some element plus some horizontally, antidiagonally or vertically adjacent neighbor totalling three exactly once.
%C Diagonal of A269152.
%e Some solutions for n=3
%e ..2..2..2. .1..1..1. .3..3..2. .1..1..0. .0..2..3. .2..2..3. .2..2..1
%e ..3..3..1. .3..3..1. .3..3..2. .1..0..1. .2..3..1. .3..1..1. .2..0..1
%e ..1..1..1. .3..3..2. .3..3..1. .2..0..0. .3..2..0. .1..3..3. .2..0..0
%Y Cf. A269152.
%K nonn
%O 1,2
%A _R. H. Hardin_, Feb 20 2016
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