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A275357 Number of 7Xn 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,1) or (-1,-2) and new values introduced in order 0..2. 1

%I #4 Jul 24 2016 10:08:50

%S 365,13824,70272,982152,17258544,306863916,5814135340,110244645536,

%T 2098489810224,40114251782424,766949039546240,14666714552507552,

%U 280570769528044520,5367279019878620308,102680304956049984556

%N Number of 7Xn 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,1) or (-1,-2) and new values introduced in order 0..2.

%C Row 7 of A275352.

%H R. H. Hardin, <a href="/A275357/b275357.txt">Table of n, a(n) for n = 1..65</a>

%e Some solutions for n=3

%e ..0..1..1. .0..1..2. .0..1..2. .0..1..0. .0..0..1. .0..1..0. .0..0..0

%e ..1..1..2. .2..2..2. .1..2..1. .1..2..1. .0..1..2. .1..2..1. .1..1..1

%e ..2..2..0. .0..1..0. .0..1..0. .2..1..0. .1..2..1. .0..1..2. .1..2..2

%e ..0..0..0. .1..0..1. .1..2..1. .0..2..0. .0..1..0. .1..0..1. .2..0..0

%e ..0..1..1. .0..1..0. .0..2..2. .2..1..2. .1..2..1. .0..1..0. .0..0..1

%e ..1..2..2. .2..0..2. .0..0..1. .0..1..1. .0..2..0. .2..2..1. .2..1..2

%e ..0..2..2. .0..1..0. .0..1..1. .2..0..2. .0..0..1. .0..2..0. .2..2..1

%Y Cf. A275352.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 24 2016

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Last modified April 23 08:14 EDT 2024. Contains 371905 sequences. (Running on oeis4.)