A298086 - OEIS

%I #4 Jan 12 2018 09:01:56

%S 0,34,18,213,1574,11202,65218,479206,3481050,24695892,177272585,

%T 1292781132,9346339114,67597407637,490930663188,3562917786488,

%U 25842902976432,187580825378770,1361838171557890,9885195460409937

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

%C Column 7 of A298087.

%H R. H. Hardin, <a href="/A298086/b298086.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=7

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

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

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

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

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

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

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

%Y Cf. A298087.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 12 2018