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A305009 Number of n X n 0..1 arrays with every element unequal to 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero. 0

%I

%S 0,3,14,42,2715,28477,640900,108290760,7783586346,1272340558178

%N Number of n X n 0..1 arrays with every element unequal to 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

%C Diagonal of A305015.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A305015.

%K nonn

%O 1,2

%A _R. H. Hardin_, May 23 2018

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Last modified July 23 12:19 EDT 2021. Contains 346259 sequences. (Running on oeis4.)