A297957 - OEIS

%I #4 Jan 09 2018 07:56:34

%S 5,49,109,779,2596,11283,61204,284304,1375342,6952910,34481150,

%T 170526375,851167905,4246845842,21142550887,105387070394,525656312520,

%U 2620783997147,13066690252443,65162285094742,324954134100762

%N Number of nX6 0..1 arrays with every element equal to 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.

%C Column 6 of A297959.

%H R. H. Hardin, <a href="/A297957/b297957.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=7

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

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

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

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

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

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

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

%Y Cf. A297959.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 09 2018