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A303793 Number of n X n 0..1 arrays with every element unequal to 0, 1, 2 or 4 king-move adjacent elements, with upper left element zero. 0

%I #6 Sep 16 2020 19:07:56

%S 1,4,17,90,562,5282,15478,394667,587035,47608207,23125171,8706714125,

%T 1066431672,2470846969189,56568350211,1133933765289063,3650604967363

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

%C Diagonal of A303800.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A303800.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 30 2018

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Last modified March 19 03:33 EDT 2024. Contains 370952 sequences. (Running on oeis4.)