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A303324 Number of nX7 0..1 arrays with every element equal to 0, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Apr 21 2018 13:12:54

%S 1,128,4,46,368,758,2956,15494,44101,190416,843033,3033091,12413910,

%T 51530654,201376755,814350745,3304173349,13195116320,53237817569,

%U 214790465512,862745046281,3476740567795,14008372152609,56369700131001

%N Number of nX7 0..1 arrays with every element equal to 0, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Column 7 of A303325.

%H R. H. Hardin, <a href="/A303324/b303324.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A303325.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 21 2018

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Last modified April 16 10:45 EDT 2024. Contains 371709 sequences. (Running on oeis4.)