A298892 - OEIS

%I #4 Jan 28 2018 09:05:41

%S 0,11,4,31,219,579,1858,8891,34212,128103,538967,2219296,8764075,

%T 36216096,148454907,602014960,2469409541,10115533795,41307139499,

%U 169152390705,692711105743,2833870255179,11601723412009,47502652641814

%N Number of nX5 0..1 arrays with every element equal to 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

%C Column 5 of A298895.

%H R. H. Hardin, <a href="/A298892/b298892.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=7

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

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

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

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

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

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

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

%Y Cf. A298895.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 28 2018