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%I #8 Oct 03 2025 08:34:13
%S 1,8,14,20,28,26,18,16,30,34,44,42,16,44,54,98,168,248,76,54,30,12,18,
%T 28
%N Number of 0..7 arrays x(0..n+2) of n+3 elements with zero n-1st differences.
%C Column 7 of A200329
%e Some solutions for n=6
%e ..7....1....5....5....3....0....0....2....0....7....1....1....2....2....0....6
%e ..5....1....5....0....3....2....7....0....6....1....5....0....6....7....2....7
%e ..5....1....5....0....3....2....7....2....7....0....6....1....7....7....5....6
%e ..5....1....5....2....3....2....5....5....6....1....5....2....6....5....7....5
%e ..4....1....5....4....3....3....4....7....5....2....3....2....4....3....7....5
%e ..2....1....5....5....3....5....5....7....5....2....1....1....2....2....5....6
%e ..0....1....5....5....3....7....7....5....6....1....0....0....1....2....2....7
%e ..0....1....5....5....3....7....7....2....7....0....1....1....2....2....0....6
%e ..5....1....5....7....3....2....0....0....6....1....5....7....6....0....2....0
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 16 2011