A299606 - OEIS

%I #4 Feb 14 2018 07:08:57

%S 8,1933,3820,14888,62547,292458,1284100,5779019,26461571,119048834,

%T 535237156,2425687653,10991470354,49744855107,225323551043,

%U 1020921422835,4624691566971,20953659416364,94961790268613,430383835640507

%N Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 7 of A299607.

%H R. H. Hardin, <a href="/A299606/b299606.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=6

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

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

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

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

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

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

%Y Cf. A299607.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 14 2018