A305278 - OEIS

%I #4 May 29 2018 08:04:00

%S 1,82,87,487,1185,5060,17335,73058,275241,1135214,4474141,18272560,

%T 73232230,297696906,1201098907,4872144375,19707171814,79868387402,

%U 323359088801,1310050602370,5305691918957,21492812038683,87055596884440

%N Number of nX5 0..1 arrays with every element unequal to 0, 2, 3, 4 or 8 king-move adjacent elements, with upper left element zero.

%C Column 5 of A305281.

%H R. H. Hardin, <a href="/A305278/b305278.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A305281.

%K nonn

%O 1,2

%A _R. H. Hardin_, May 29 2018