A301444 - OEIS

A301444

Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%I #6 Aug 20 2020 11:43:50

%S 1,8,171,9541,1423344,564002959,592006690060,1646995545166039,

%T 12145346382857661327,237428255410557186948107

%N Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Diagonal of A301450.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A301450.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 21 2018