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 A300606 Number of n X n 0..1 arrays with every element equal to 1, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 0

%I

%S 0,3,53,2347,263468,77669371,59556673490,118646962163280,

%T 613557423442676836,8242700694825663880442

%N Number of n X n 0..1 arrays with every element equal to 1, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Diagonal of A300612.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300612.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 09 2018

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Last modified December 8 14:41 EST 2021. Contains 349596 sequences. (Running on oeis4.)