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A278278 Number of nX6 0..1 arrays with every element both equal and not equal to some elements at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero. 1

%I #4 Nov 16 2016 12:08:59

%S 0,109,3723,172091,7466627,329985827,14526103064,640011857446,

%T 28192246592564,1241921389868057,54708244420668156,

%U 2409976614356023808,106162841585764737411,4676622598537493878129,206011798163918590188603

%N Number of nX6 0..1 arrays with every element both equal and not equal to some elements at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.

%C Column 6 of A278280.

%H R. H. Hardin, <a href="/A278278/b278278.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A278278/a278278.txt">Empirical recurrence of order 98</a>

%F Empirical recurrence of order 98 (see link above)

%e Some solutions for n=4

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

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

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

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

%Y Cf. A278280.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 16 2016

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Last modified April 24 11:37 EDT 2024. Contains 371936 sequences. (Running on oeis4.)