A269151 - OEIS

%I #6 Mar 15 2023 15:01:35

%S 5832,2270592,642676704,167970539096,42119837369168,10275566914040000,

%T 2456638851763181776,578202261783376052264,134401513805944458613328,

%U 30926068491391277680083776,7056680383368519798619918656

%N Number of n X 7 0..3 arrays with some element plus some horizontally, antidiagonally or vertically adjacent neighbor totalling three exactly once.

%C Column 7 of A269152.

%H R. H. Hardin, <a href="/A269151/b269151.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

%e ..2..2..0..1..2..3..1. .0..3..3..3..1..3..3. .0..2..3..2..2..1..3

%Y Cf. A269152.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 20 2016