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A278175 Number of nX6 0..1 arrays with every element both equal and not equal to some elements at offset (-1,0) (-1,1) (0,-1) (0,1) (1,-1) or (1,0), with upper left element zero. 1

%I #4 Nov 13 2016 16:09:56

%S 0,137,4551,205363,9120939,408355632,18218081491,813097394374,

%T 36285966496008,1619341940295084,72266408849439553,

%U 3225035964623559710,143923783835527234449,6422891413398861709329,286634583241796971035956

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

%C Column 6 of A278177.

%H R. H. Hardin, <a href="/A278175/b278175.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

%Y Cf. A278177.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 13 2016

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Last modified April 19 14:10 EDT 2024. Contains 371792 sequences. (Running on oeis4.)