A295118 - OEIS

%I #4 Nov 15 2017 06:20:07

%S 9,85,665,5793,49302,420519,3590821,30650456,261518933,2232138695,

%T 19050970320,162588578831,1387635803762,11842933188678,

%U 101074697830670,862633152321378,7362232721371648,62833751476788374,536261351701937815

%N Number of nX6 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 4 1s.

%C Column 6 of A295120.

%H R. H. Hardin, <a href="/A295118/b295118.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A295118/a295118.txt">Empirical recurrence of order 78</a>

%F Empirical recurrence of order 78 (see link above)

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A295120.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 15 2017