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A305640 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero. 1

%I #4 Jun 07 2018 09:00:27

%S 32,284,743,6329,48567,385282,3252937,29925524,280854245,2612768319,

%T 24785851660,236772462876,2251291660203,21530551123401,

%U 206148758486168,1970437000025705,18871772494554514,180748165315349147

%N Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

%C Column 6 of A305642.

%H R. H. Hardin, <a href="/A305640/b305640.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A305642.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 07 2018

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Last modified September 24 19:02 EDT 2023. Contains 365581 sequences. (Running on oeis4.)