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A298455 Number of n X n 0..1 arrays with every element equal to 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero. 0

%I #6 May 23 2020 04:38:19

%S 0,1,8,219,35980,19100497,39291988976,290849365371077,

%T 7804886774633048676

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

%C Diagonal of A298461.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A298461.

%K nonn

%O 1,3

%A _R. H. Hardin_, Jan 19 2018

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Last modified July 17 12:34 EDT 2024. Contains 374377 sequences. (Running on oeis4.)