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 A199844 #7 Jun 26 2022 03:22:49 %S A199844 1,6,25,103,399,1532,5754,21383,78735,288580,1053894,3840866,13981403, %T A199844 50874249,185128907,673970102,2455319377,8952722626,32676307483, %U A199844 119391572211,436711281979,1599194641093,5862625449021,21515851244159 %N A199844 Number of -5..5 arrays x(0..n-1) of n elements with zero sum and no element more than one greater than the previous. %C A199844 Column 5 of A199847. %H A199844 R. H. Hardin, <a href="/A199844/b199844.txt">Table of n, a(n) for n = 1..186</a> %e A199844 Some solutions for n=6 %e A199844 ..1....2....3....5....5....5....5....4....0....2....4....2....3....3....4....5 %e A199844 ..0....3....2....1....4....0....1....3....0....1....2....3....3....4....5....3 %e A199844 ..1....1....2....2...-2...-1...-1....3....1...-2....1....3....2...-2...-2....3 %e A199844 ..1....1....0...-3...-2...-2...-1...-3....1...-1...-3...-1....2...-2...-2...-2 %e A199844 ..2...-2...-3...-2...-3...-1....0...-2....1....0...-2...-4...-5...-2...-1...-5 %e A199844 .-5...-5...-4...-3...-2...-1...-4...-5...-3....0...-2...-3...-5...-1...-4...-4 %Y A199844 Cf. A199847. %K A199844 nonn %O A199844 1,2 %A A199844 _R. H. Hardin_, Nov 11 2011