|
%I #4 Jan 19 2018 08:53:38
%S 0,41,710,17443,603930,19100497,628485305,20637616811,679019933720,
%T 22363401710009,736631123265871,24268529324674384,799566716637697282,
%U 26343734600927008513,867969518747983340357,28597853736091126825994
%N Number of nX6 0..1 arrays with every element equal to 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.
%C Column 6 of A298461.
%H R. H. Hardin, <a href="/A298459/b298459.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..0..1..1..0..0..0. .0..0..0..1..1..1. .0..1..1..0..0..0. .0..0..0..1..1..0
%e ..0..0..1..0..1..0. .0..1..0..1..1..0. .0..0..1..0..0..0. .1..0..0..1..0..0
%e ..0..1..1..0..1..1. .0..1..1..1..0..0. .1..1..0..0..1..1. .1..1..0..1..1..0
%e ..0..0..1..0..0..1. .0..0..1..1..1..0. .1..1..1..1..1..1. .1..0..0..0..0..0
%Y Cf. A298461.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jan 19 2018
| 