This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A200162 #6 Jul 22 2025 15:42:47 %S A200162 10,80,726,6160,52486,438968,3687480,30776992,257108784,2144437176 %N A200162 Number of -5..5 arrays x(0..n-1) of n elements with nonzero sum and with zero through n-1 differences all nonzero. %C A200162 Column 5 of A200165 %e A200162 Some solutions for n=5 %e A200162 .-2...-2....5...-5....2....4....3...-1....3...-2...-2...-5...-5....2...-5....1 %e A200162 ..5...-5...-2....1...-2....2...-4...-4...-5....1...-3...-2....2....1....5...-3 %e A200162 ..4....4....1....2...-5...-2....1...-1....1...-2....3....3...-3...-4...-2....3 %e A200162 ..5....5...-4....1....3...-1...-3...-3...-3....1....5....1...-5....4...-5....2 %e A200162 .-3....1....3....5....4....4....4...-4...-1...-3....4...-2....3...-1...-1....4 %K A200162 nonn %O A200162 1,1 %A A200162 _R. H. Hardin_ Nov 13 2011