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A302307 Number of nX6 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Apr 05 2018 09:37:11

%S 13,113,121,663,1595,5715,18990,73663,312122,1468425,7435015,39732589,

%T 220413622,1252325938,7234253383,42220737525,248052641109,

%U 1463694696334,8660691810640,51336560128881,304650450122309,1809254624278226

%N Number of nX6 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Column 6 of A302309.

%H R. H. Hardin, <a href="/A302307/b302307.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A302309.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 05 2018

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)