A285754 - OEIS

%I #6 Apr 05 2020 23:22:52

%S 0,206,5105,125088,3640966,99685406,3020617824,86939481532,

%T 2666601331554,79052897096336,2437071630790169,73583527506072928,

%U 2276218136245984554,69547330813342998878,2157487582330157678600,66455374887634153596624

%N Number of 5 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1.

%C Row 5 of A285750.

%H R. H. Hardin, <a href="/A285754/b285754.txt">Table of n, a(n) for n = 1..55</a>

%e Some solutions for n=4

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

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

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

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

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

%Y Cf. A285750.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 25 2017