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A297549 Number of 6Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 3 neighboring 1s. 1

%I

%S 1,31,2050,13248,94647,3015179,67372651,916902295,14467301940,

%T 290169660945,5329084696567,89381913856892,1564002749882255,

%U 28438920688062707,506516973635082252,8886666042271930829

%N Number of 6Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 3 neighboring 1s.

%C Row 6 of A297544.

%H R. H. Hardin, <a href="/A297549/b297549.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

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

%Y Cf. A297544.

%K nonn

%O 1,2

%A _R. H. Hardin_, Dec 31 2017

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Last modified September 25 22:55 EDT 2020. Contains 337346 sequences. (Running on oeis4.)