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Number of nX6 0..1 arrays with every element equal to 1, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.
1

%I #4 Jan 23 2018 12:11:29

%S 1,88,25,682,5749,32834,480343,4361690,38698593,449697137,4663007069,

%T 44337436181,485983694996,5099325920478,50776205571157,

%U 539875449401628,5656457497209170,57637709534714384,604476166479642624

%N Number of nX6 0..1 arrays with every element equal to 1, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

%C Column 6 of A298622.

%H R. H. Hardin, <a href="/A298620/b298620.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A298622.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 23 2018

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Last modified September 23 14:19 EDT 2024. Contains 376178 sequences. (Running on oeis4.)