A303412 - OEIS

%I #4 Apr 23 2018 10:43:19

%S 0,61,541,902,4013,29411,160247,660748,3071197,17079507,88199621,

%T 419285701,2063343133,10608771290,53689192266,265848111937,

%U 1327085663799,6701302273037,33718513860297,168717573787828,845811333794914

%N Number of 5Xn 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Row 5 of A303410.

%H R. H. Hardin, <a href="/A303412/b303412.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A303410.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 23 2018