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 A262130 #4 Sep 11 2015 19:48:13 %S A262130 1,1,1,3,9,45,225,1574,11017,98702,887795,9657563,106067481, %T A262130 1353914186,17550071995,256827579219,3835324609489,63272134122021, %U A262130 1069057522350991,19628634717955199,370023070383398685,7484704516983935936,155675234416541005945 %N A262130 Number of permutations p of [n] such that the up-down signature of p has nonnegative partial sums with a maximal value <= 5. %H A262130 Alois P. Heinz, <a href="/A262130/b262130.txt">Table of n, a(n) for n = 0..200</a> %F A262130 a(n) = A262124(n,5). %Y A262130 Column k=5 of A262124. %K A262130 nonn %O A262130 0,4 %A A262130 _Alois P. Heinz_, Sep 11 2015