A303191 - OEIS

A303191

Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%I #6 Sep 16 2020 19:03:41

%S 1,3,12,46,523,8250,164295,6303961,332058205,27569938407,

%T 3963913990343,828978948856945

%N Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Diagonal of A303197.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A303197.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 19 2018