A299454 - OEIS

%I #4 Feb 10 2018 10:35:15

%S 1,18,19,48,175,508,1522,5065,16968,56041,187865,632318,2129542,

%T 7184550,24247946,81877297,276519444,934064187,3155663032,10661937499,

%U 36024652028,121723990676,411304232139,1389808116350,4696240793449

%N Number of nX4 0..1 arrays with every element equal to 0, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

%C Column 4 of A299458.

%H R. H. Hardin, <a href="/A299454/b299454.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A299454/a299454.txt">Empirical recurrence of order 70</a>

%F Empirical recurrence of order 70 (see link above)

%e Some solutions for n=7

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

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

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

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

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

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

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

%Y Cf. A299458.

%K nonn

%O 1,2

%A _R. H. Hardin_, Feb 10 2018