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A278174 Number of nX5 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 16:09:12

%S 0,43,737,17396,396024,9120939,209105063,4797179760,110034231906,

%T 2523955236624,57893739618179,1327951316712237,30460184207856087,

%U 698687420488831794,16026301711146587408,367606943763824641516

%N Number of nX5 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 5 of A278177.

%H R. H. Hardin, <a href="/A278174/b278174.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

%e ..1..1..1..0..0. .0..0..0..0..1. .1..0..1..0..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 15 23:58 EDT 2024. Contains 371696 sequences. (Running on oeis4.)