A298664 - OEIS

%I #4 Jan 24 2018 10:26:45

%S 1,2,5,2,20,38,84,319,770,2106,6301,17282,47774,137186,386924,1083606,

%T 3099891,8800002,24988837,71554943,204638340,586541392,1687246083,

%U 4861247458,14034796678,40624856818,117836193317,342470517019

%N Number of nX5 0..1 arrays with every element equal to 0, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

%C Column 5 of A298667.

%H R. H. Hardin, <a href="/A298664/b298664.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=8

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

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

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

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

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

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

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

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

%Y Cf. A298667.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 24 2018