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A302617 Number of n X n 0..1 arrays with every element equal to 0, 1, 2 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 0

%I

%S 1,8,25,130,896,9015,159831,5004858,294788397,30176400734,

%T 5405230985847,1752290111920178,1004963193258165778,

%U 1008871420120253493228,1799713610080002182624711

%N Number of n X n 0..1 arrays with every element equal to 0, 1, 2 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Diagonal of A302623.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A302623.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 10 2018

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Last modified October 19 09:58 EDT 2021. Contains 348074 sequences. (Running on oeis4.)