A320361 - OEIS

%I #4 Oct 11 2018 14:01:35

%S 0,5,60,657,7902,91711,1076811,12633183,148082443,1736213698,

%T 20357548449,238693491568,2798676228713,32814460150445,

%U 384749618366454,4511189841036949,52893701506634832,620178660144475112

%N Number of nX5 0..1 arrays with every element unequal to 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 5 of A320364.

%H R. H. Hardin, <a href="/A320361/b320361.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A320364.

%K nonn

%O 1,2

%A _R. H. Hardin_, Oct 11 2018