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A302409 Number of n X n 0..1 arrays with every element equal to 0, 1, 2 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 0

%I

%S 1,8,30,259,3553,84581,2342685,119713006,12137387233,2207029867972,

%T 643385844203031,329004378370081339

%N Number of n X n 0..1 arrays with every element equal to 0, 1, 2 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Diagonal of A302415.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A302415.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 07 2018

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Last modified August 8 12:30 EDT 2022. Contains 356009 sequences. (Running on oeis4.)