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%I #5 Dec 18 2015 18:18:13
%S 1,1,4,602,322768,33093356640,12954733199158688,
%T 2562708954818067388122544
%N Number of diagonal and antidiagonal neighbor colorings of the odd squares of an n X n array with new integer colors introduced in row major order
%C Diagonal of A215924
%e Some solutions for n=4
%e ..x..0..x..1....x..0..x..1....x..0..x..1....x..0..x..1....x..0..x..0
%e ..1..x..2..x....1..x..2..x....2..x..3..x....1..x..2..x....1..x..2..x
%e ..x..0..x..0....x..3..x..1....x..0..x..0....x..0..x..1....x..0..x..0
%e ..3..x..2..x....4..x..4..x....4..x..1..x....3..x..4..x....3..x..1..x
%K nonn
%O 1,3
%A _R. H. Hardin_ Aug 27 2012