%I #4 Mar 31 2012 12:36:37
%S 1,4,6,8,14,18,24,56,26,26,54,226,260,482,196,54,128,728,1226,4106,
%T 1168,272,892,4798,1390,1298,962,216,470,2104
%N Number of 0..3 arrays x(0..n) of n+1 elements with zero n-1st differences
%C Column 3 of A200082
%e Some solutions for n=6
%e ..3....1....3....1....2....1....0....2....3....2....0....0....2....1....3....2
%e ..1....2....2....2....3....0....1....1....3....1....0....2....0....3....3....2
%e ..1....1....1....3....2....1....2....0....3....2....0....2....0....3....1....2
%e ..2....0....1....3....1....2....2....0....3....3....0....1....1....2....0....2
%e ..3....0....2....2....1....2....1....1....3....3....0....0....2....1....1....2
%e ..3....1....3....1....2....1....0....2....3....2....0....0....2....1....3....2
%e ..1....2....2....2....3....0....1....1....3....1....0....2....0....3....3....2
%K nonn
%O 1,2
%A _R. H. Hardin_ Nov 13 2011