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

%I #4 Jul 12 2016 08:04:30

%S 24,648,6936,87780,1119744,14362920,183551766,2348053596,30087735576,

%T 385522530402,4938288770400,63258857161326,810399782288934,

%U 10381856146131732,132997595413557654,1703779141582413888

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

%C Column 6 of A274959.

%H R. H. Hardin, <a href="/A274957/b274957.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A274957/a274957.txt">Empirical recurrence of order 81</a>

%F Empirical recurrence of order 81 (see link above)

%e Some solutions for n=4

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

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

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

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

%Y Cf. A274959.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 12 2016