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A302215 Number of 5Xn 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Apr 03 2018 12:03:57

%S 16,6,147,18,448,281,1868,6036,16344,110672,332791,1836532,7975778,

%T 32963967,175388042,679563302,3615591697,15049212425,73677748194,

%U 333969856156,1532899327683,7260258957631,32677907934863,155388905659519

%N Number of 5Xn 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Row 5 of A302212.

%H R. H. Hardin, <a href="/A302215/b302215.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A302212.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 03 2018

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Last modified April 24 05:26 EDT 2024. Contains 371918 sequences. (Running on oeis4.)