A300092 - OEIS

%I #6 Feb 25 2018 06:20:14

%S 1,18,19,56,203,672,2168,7287,25652,88027,306375,1070802,3744286,

%T 13105674,45926952,161012379,564504898,1979855821,6944885024,

%U 24362969123,85473134558,299883787584,1052181830655,3691806167058,12953760142043

%N Number of nX4 0..1 arrays with every element equal to 0, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 4 of A300096.

%H R. H. Hardin, <a href="/A300092/b300092.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A300092/a300092.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..0..0. .0..1..0..1. .0..1..0..0. .0..0..1..1. .0..0..1..1

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

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

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

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

%Y Cf. A300096.

%K nonn

%O 1,2

%A _R. H. Hardin_, Feb 24 2018