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%I #11 May 18 2020 03:01:37
%S 1,5,34,1573,169064,34438557,11535531783,5804338800147,
%T 4121852595871393,3947133396896179889,4923290609971869799119,
%U 7783034938833777039389506,15253558021465456746321690675,36391805974300638618769192592189,104086634920105554145003030677202100
%N Number of 3 X n nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any horizontal, diagonal or antidiagonal neighbor (colorings ignoring permutations of colors).
%H Andrew Howroyd, <a href="/A208098/b208098.txt">Table of n, a(n) for n = 0..100</a>
%e Some solutions for n=4:
%e ..0..1..0..2....0..1..0..1....0..1..2..0....0..1..0..1....0..1..0..1
%e ..3..1..0..2....0..1..0..1....0..1..2..0....0..2..3..1....0..1..0..1
%e ..0..1..0..1....2..1..2..1....0..1..2..0....0..1..0..4....0..1..0..1
%Y Row 3 of A208096.
%K nonn
%O 0,2
%A _R. H. Hardin_, Feb 23 2012
%E a(0)=1 prepended and terms a(9) and beyond from _Andrew Howroyd_, May 17 2020
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