A207362 - OEIS

A207362

Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 1 vertically.

%I #8 Jun 26 2022 12:56:10

%S 2,16,90,784,5856,42849,353808,2792241,21195317,182223001,1372615690,

%T 11550015841,91115397450,745461286801,5965914998428,49005684164836,

%U 389634565985060,3219980044337424

%N Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 1 vertically.

%C Diagonal of A207368.

%e Some solutions for n=4

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

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

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

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

%Y Cf. A207368.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 17 2012