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A303015 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1

%I

%S 64,960,5571,79945,970892,9976891,121524556,1423906011,16163776349,

%T 190207010302,2214124343835,25650137255305,299401227197388,

%U 3483898291886107,40523476862477296,472073705798224700

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

%C Column 7 of A303016.

%H R. H. Hardin, <a href="/A303015/b303015.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A303016.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 17 2018

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Last modified November 28 01:24 EST 2021. Contains 349396 sequences. (Running on oeis4.)