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A317901 Number of nX7 0..1 arrays with every element unequal to 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1

%I

%S 0,22,6,116,315,502,3630,7770,34645,86317,320622,966922,3306875,

%T 10609266,34934092,114138685,374143779,1227335831,4020363887,

%U 13193058120,43248448731,141915161267,465495771858,1527373960376,5011467375946

%N Number of nX7 0..1 arrays with every element unequal to 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 7 of A317902.

%H R. H. Hardin, <a href="/A317901/b317901.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A317902.

%K nonn

%O 1,2

%A _R. H. Hardin_, Aug 10 2018

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Last modified May 17 17:06 EDT 2022. Contains 353747 sequences. (Running on oeis4.)