A306132 - OEIS

%I #4 Jun 22 2018 07:42:21

%S 1,24,64,498,2922,16877,111073,700859,4405884,28199822,179362001,

%T 1140613869,7270251022,46301421256,294878401359,1878528663477,

%U 11965892345235,76220990690570,485534190519239,3092850581186659

%N Number of nX4 0..1 arrays with every element unequal to 0, 2, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

%C Column 4 of A306136.

%H R. H. Hardin, <a href="/A306132/b306132.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A306132/a306132.txt">Empirical recurrence of order 71</a>

%F Empirical recurrence of order 71 (see link above)

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A306136.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jun 22 2018