%I #4 Mar 31 2012 12:36:37
%S 1,8,22,64,182,454,1046,2546,5056,11638,33262,101112,191802,688304,
%T 769106,1102184,5220960,23546744,49886556,135889790,142614238,
%U 121124812,570957758
%N Number of 0..7 arrays x(0..n) of n+1 elements with zero n1st differences
%C Column 7 of A200082
%e Some solutions for n=6
%e ..2....7....7....2....6....0....0....2....1....1....5....2....0....6....7....6
%e ..4....1....0....2....2....6....6....5....3....0....6....4....3....5....4....2
%e ..3....3....3....1....0....7....6....6....5....1....5....2....4....4....6....3
%e ..3....5....6....2....1....6....5....5....5....2....4....0....3....4....7....5
%e ..5....4....5....5....4....5....5....3....3....2....4....0....1....5....5....6
%e ..7....2....2....7....6....5....5....2....1....1....5....2....0....6....2....6
%e ..4....6....5....2....2....6....1....5....3....0....6....4....3....5....4....7
%K nonn
%O 1,2
%A _R. H. Hardin_ Nov 13 2011
