A301350 - OEIS

%I #4 Mar 19 2018 09:43:24

%S 2,30,277,2349,19561,165010,1392131,11741731,99032014,835272398,

%T 7045026710,59420627072,501178143148,4227144439913,35653491957422,

%U 300716364726693,2536366776713612,21392771375921024,180435523636242529

%N Number of nX4 0..1 arrays with every element equal to 1, 2, 3, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 4 of A301354.

%H R. H. Hardin, <a href="/A301350/b301350.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A301350/a301350.txt">Empirical recurrence of order 72</a>

%F Empirical recurrence of order 72 (see link above)

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A301354.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 19 2018