%I #5 Aug 12 2016 07:05:16

%S 0,0,17,774,76035,10866362,2130866037,551607137250,182413680759659,

%T 75075411378226014,37647855624072772341

%N Number of nX3 arrays containing 3 copies of 0..n-1 with no equal horizontal or antidiagonal neighbors and new values introduced sequentially from 0.

%C Column 3 of A265192.

%e Some solutions for n=4

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

%e ..2..1..3....0..2..1....3..0..3....3..0..1....3..0..2....2..3..1....3..0..2

%e ..2..1..2....3..2..3....1..2..0....3..2..0....1..3..1....2..0..3....3..1..2

%e ..3..0..3....1..2..3....1..3..2....1..3..2....0..3..2....3..0..1....3..0..1

%Y Cf. A265192.

%K nonn

%O 1,3

%A _R. H. Hardin_, Dec 04 2015