A269080 - OEIS

%I #4 Feb 19 2016 08:48:55

%S 64,659,10167,123976,1529241,18220241,210476400,2427784475,

%T 27272243911,306906072088,3392662878321,37516091561153,

%U 410121025237344,4478699111368451,48545701054002647,525277883650197736

%N Number of 6Xn binary arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once.

%C Row 6 of A269075.

%H R. H. Hardin, <a href="/A269080/b269080.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

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

%Y Cf. A269075.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 19 2016