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A299227 Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero. 1

%I #4 Feb 05 2018 13:33:04

%S 8,2907,128610,4532025,173234478,6766315496,260938102438,

%T 10077166692402,389637415718865,15058710314116325,581977479263622822,

%U 22493737410496748938,869383064950398158845,33601436598811749671626

%N Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

%C Column 7 of A299228.

%H R. H. Hardin, <a href="/A299227/b299227.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A299228.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 05 2018

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Last modified July 31 17:27 EDT 2024. Contains 374808 sequences. (Running on oeis4.)