A299838 - OEIS

%I #4 Feb 20 2018 08:15:09

%S 8,3336,402928,41026724,4390323230,473261273932,50892107038125,

%T 5471622342472717,588340577558059509,63262065057639295398,

%U 6802303580774288160044,731423053957352413649011

%N Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

%C Column 7 of A299839.

%H R. H. Hardin, <a href="/A299838/b299838.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A299839.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 20 2018