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A305088 Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero. 1

%I #4 May 25 2018 08:19:56

%S 8,346,920,1016,39016,285422,630306,12378708,108542087,472695509,

%T 5199121658,46704561668,282819566127,2484588647059,21486126090213,

%U 151693481573725,1234399626861450,10281426006005255,77725590704286319

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

%C Column 7 of A305089.

%H R. H. Hardin, <a href="/A305088/b305088.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A305089.

%K nonn

%O 1,1

%A _R. H. Hardin_, May 25 2018

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Last modified April 20 11:40 EDT 2024. Contains 371838 sequences. (Running on oeis4.)