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Number of nX6 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,1) or (0,-1) and new values introduced in order 0..2.
1

%I #4 Aug 28 2016 08:25:52

%S 16,324,2765,33461,408105,4988145,61239977,752660245,9254592049,

%T 113817204341,1399867249821,17217717400933,211770912156897,

%U 2604690694931325,32036472371696501,394032445053865405

%N Number of nX6 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,1) or (0,-1) and new values introduced in order 0..2.

%C Column 6 of A276299.

%H R. H. Hardin, <a href="/A276297/b276297.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A276297/a276297.txt">Empirical recurrence of order 70</a>

%F Empirical recurrence of order 70 (see link above)

%e Some solutions for n=4

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

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

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

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

%Y Cf. A276299.

%K nonn

%O 1,1

%A _R. H. Hardin_, Aug 28 2016