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A299461 Number of nX4 0..1 arrays with every element equal to 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero. 1

%I

%S 2,52,226,1013,5294,27639,139226,713421,3674765,18853673,96786807,

%T 497418193,2555599511,13129374671,67461650707,346631157067,

%U 1781036709459,9151338992559,47021631140929,241607368725137,1241433013500699

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

%C Column 4 of A299465.

%H R. H. Hardin, <a href="/A299461/b299461.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A299461/a299461.txt">Empirical recurrence of order 69</a>

%F Empirical recurrence of order 69 (see link above)

%e Some solutions for n=6

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

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

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

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

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

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

%Y Cf. A299465.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 10 2018

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Last modified February 6 20:15 EST 2023. Contains 360111 sequences. (Running on oeis4.)