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A298253 Number of n X n 0..1 arrays with every element equal to 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero. 0

%I #6 May 03 2020 15:46:43

%S 0,1,1,11,86,895,13991,435534,16014301,939457994

%N Number of n X n 0..1 arrays with every element equal to 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.

%C Diagonal of A298259.

%e Some solutions for n=7

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

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

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

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

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

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

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

%Y Cf. A298259.

%K nonn

%O 1,4

%A _R. H. Hardin_, Jan 15 2018

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Last modified March 29 07:27 EDT 2024. Contains 371265 sequences. (Running on oeis4.)