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Number of 6Xn 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
1

%I #4 Apr 06 2018 12:45:13

%S 0,361,16451,514655,20993054,849467774,34271733937,1383359844850,

%T 55869034107773,2256277862917399,91119808168300632,

%U 3679882775189443109,148612776964178660961,6001755395115442008533,242382043501326104374522

%N Number of 6Xn 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Row 6 of A302381.

%H R. H. Hardin, <a href="/A302385/b302385.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

%e ..0..0..0..1..0. .0..0..0..1..0. .0..0..0..0..0. .0..0..0..0..0

%e ..1..0..0..0..1. .1..0..0..0..1. .1..0..0..0..1. .1..0..0..0..1

%e ..0..1..1..0..1. .0..1..1..0..0. .0..1..1..1..0. .1..1..0..1..1

%e ..0..0..1..1..0. .1..0..0..0..0. .0..0..1..1..0. .0..1..0..0..1

%e ..1..1..0..1..1. .1..1..1..1..1. .1..1..0..0..1. .1..0..1..0..1

%e ..0..0..1..0..1. .1..0..0..1..1. .0..0..1..1..1. .0..0..0..1..0

%Y Cf. A302381.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 06 2018