A303096 - OEIS

A303096

Number of n X n 0..1 arrays with every element equal to 1, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%I #6 Sep 16 2020 19:02:37

%S 0,3,77,4667,1138331,906385523,2441756629583,22050004579190301,

%T 670548945799312331099

%N Number of n X n 0..1 arrays with every element equal to 1, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Diagonal of A303102.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A303102.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 18 2018