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A298559 Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero. 1

%I #4 Jan 21 2018 08:04:52

%S 8,2048,11614,90153,781071,6852589,58699120,506226692,4381689438,

%T 37892530486,327703077378,2835741579464,24537643875445,

%U 212312746121732,1837172725652853,15897673713462844,137567617020675562

%N Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.

%C Column 7 of A298560.

%H R. H. Hardin, <a href="/A298559/b298559.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%Y Cf. A298560.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 21 2018

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Last modified March 28 16:00 EDT 2024. Contains 371254 sequences. (Running on oeis4.)