A299819 - OEIS

%I #6 Apr 25 2023 13:33:11

%S 1,389,4507,176353,5678641,203062719,7338573888,266405977942,

%T 9728685869763,355450127061109,13000785497304692,475626104635308752,

%U 17403283800560540891,636836368854527405026,23304330631071793509400

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

%C Column 6 of A299821.

%H R. H. Hardin, <a href="/A299819/b299819.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..1..1..0. .0..0..0..0..0..0. .0..0..0..1..1..1

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

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

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

%Y Cf. A299821.

%K nonn

%O 1,2

%A _R. H. Hardin_, Feb 19 2018