A296311 - OEIS

%I #4 Dec 10 2017 11:04:24

%S 1,9,23,45,162,479,1198,3534,10374,28464,80600,233023,663259,1871905,

%T 5398412,15702374,44643584,130054976,387536847,1118773498,3332947080,

%U 10271834711,30432525534,93816278500,301779073626,927540514785

%N Number of nX6 0..1 arrays with each 1 adjacent to 3 or 6 king-move neighboring 1s.

%C Column 6 of A296313.

%H R. H. Hardin, <a href="/A296311/b296311.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A296313.

%K nonn

%O 1,2

%A _R. H. Hardin_, Dec 10 2017