cp's OEIS Frontend

A200081 Number of 0..7 arrays x(0..n) of n+1 elements with zero n-1st differences.

%I A200081 #6 Jul 22 2025 15:40:37
%S A200081 1,8,22,64,182,454,1046,2546,5056,11638,33262,101112,191802,688304,
%T A200081 769106,1102184,5220960,23546744,49886556,135889790,142614238,
%U A200081 121124812,570957758
%N A200081 Number of 0..7 arrays x(0..n) of n+1 elements with zero n-1st differences.
%C A200081 Column 7 of A200082
%e A200081 Some solutions for n=6
%e A200081 ..2....7....7....2....6....0....0....2....1....1....5....2....0....6....7....6
%e A200081 ..4....1....0....2....2....6....6....5....3....0....6....4....3....5....4....2
%e A200081 ..3....3....3....1....0....7....6....6....5....1....5....2....4....4....6....3
%e A200081 ..3....5....6....2....1....6....5....5....5....2....4....0....3....4....7....5
%e A200081 ..5....4....5....5....4....5....5....3....3....2....4....0....1....5....5....6
%e A200081 ..7....2....2....7....6....5....5....2....1....1....5....2....0....6....2....6
%e A200081 ..4....6....5....2....2....6....1....5....3....0....6....4....3....5....4....7
%K A200081 nonn
%O A200081 1,2
%A A200081 _R. H. Hardin_ Nov 13 2011