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Number of 6Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 4 neighboring 1s.
1

%I #4 Jan 04 2018 22:22:00

%S 1,9,385,1443,11171,65215,673171,4414693,36515720,262644855,

%T 2167783248,16326721009,130593495719,1004457623070,7977094417489,

%U 62076354573565,490287264598713,3835365581310001,30228295038249915,237124926883181002

%N Number of 6Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 4 neighboring 1s.

%C Row 6 of A297733.

%H R. H. Hardin, <a href="/A297738/b297738.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=6

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

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

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

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

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

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

%Y Cf. A297733.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 04 2018