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Number of n X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 1 or 4 neighboring 1's.
0

%I #6 May 03 2020 15:35:13

%S 2,11,150,4633,401678,78957968,41030621948,49892385650107,

%T 157266548152111938,1187668466030040777022,22731639382952184172610914,

%U 1058867886808501107531538859306

%N Number of n X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 1 or 4 neighboring 1's.

%C Diagonal of A297682.

%e Some solutions for n=4

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

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

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

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

%Y Cf. A297682.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 03 2018