A298286 - OEIS

%I #6 May 19 2023 07:42:32

%S 64,3281,5631,22768,104357,484412,2195114,10198130,48049615,223679467,

%T 1041721806,4887086809,22919253272,107350787328,503656777755,

%U 2365442130353,11109565255936,52202648890916,245464176631920

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

%C Column 7 of A298287.

%H R. H. Hardin, <a href="/A298286/b298286.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A298287.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 16 2018