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 A299833 Number of n X n 0..1 arrays with every element equal to 1, 2, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero. 0

%I

%S 0,4,142,13850,5544044,8606994457,50892107038125,1150505978004893314,

%T 99505249795723847465007,32917701191229121103342743309

%N Number of n X n 0..1 arrays with every element equal to 1, 2, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

%C Diagonal of A299839.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A299839.

%K nonn

%O 1,2

%A _R. H. Hardin_, Feb 20 2018

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Last modified March 21 16:33 EDT 2023. Contains 361408 sequences. (Running on oeis4.)