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A316926 Number of nXn 0..1 arrays with every element unequal to 0, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero. 0

%I

%S 1,4,25,1719,467377,504420842,2110655397816,33990477458950173,

%T 2097232699194056398870

%N Number of nXn 0..1 arrays with every element unequal to 0, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

%C Diagonal of A316932.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316932.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jul 16 2018

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Last modified June 25 04:02 EDT 2019. Contains 324345 sequences. (Running on oeis4.)