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 A297542 Number of nX6 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 3 neighboring 1s. 1

%I

%S 1,105,905,10234,205888,3015179,45293985,726450667,11267743659,

%T 174940837668,2737325839679,42676467159309,665276067132323,

%U 10380615509680131,161909949029518946,2525266352244161021

%N Number of nX6 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 3 neighboring 1s.

%C Column 6 of A297544.

%H R. H. Hardin, <a href="/A297542/b297542.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A297544.

%K nonn

%O 1,2

%A _R. H. Hardin_, Dec 31 2017

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Last modified December 2 10:13 EST 2021. Contains 349437 sequences. (Running on oeis4.)