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 A262133 #4 Sep 11 2015 19:44:27 %S A262133 1,1,1,3,9,45,225,1575,11025,99225,893024,9823264,108051897, %T A262133 1404674661,18256733309,273850999635,4104997257175,69784953371975, %U A262133 1184628370304553,22507939035786507,426574822311932257,8958071268550577397,187401362296416433302 %N A262133 Number of permutations p of [n] such that the up-down signature of p has nonnegative partial sums with a maximal value <= 8. %H A262133 Alois P. Heinz, <a href="/A262133/b262133.txt">Table of n, a(n) for n = 0..200</a> %F A262133 a(n) = A262124(n,8). %Y A262133 Column k=8 of A262124. %K A262133 nonn %O A262133 0,4 %A A262133 _Alois P. Heinz_, Sep 11 2015