A301319 - OEIS

A301319

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

%I #6 Aug 20 2020 11:41:53

%S 1,7,45,302,1649,7600,31172,119694,446581,1658182,6211592,23593138,

%T 91031007,354490536,1502008575,5520750802,463638209284

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

%C Diagonal of A301323.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A301323.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 18 2018