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 A143170 #8 Jun 18 2017 10:08:34 %S A143170 1,45,1680,62790,2471175,104085135,4712781150,229345716600, %T A143170 11970744110325,668241679730625,39773331191493900,2516317288024790250, %U A143170 168723807382851595875,11956978164372003637875,893260022082269487896250,70178395183380972653665500 %N A143170 Fifth column of triangle A000369: |S2(-3;n+5,5)|. %F A143170 a(n) = A000369(n+5,5) = |S2(-3;n+5,5)|, n >= 0. %F A143170 E.g.f.: d^5/dx^5 ((1-(1-4*x)^(1/4))^5)/5! = (1/4)*(539+154*x+585*(1-4*x)^(1/2)-1120*(1-4*x)^(1/4))/(1-4*x)^(19/4). %Y A143170 Fourth column of A000369 is A143169. %K A143170 nonn,easy %O A143170 0,2 %A A143170 _Wolfdieter Lang_, Sep 15 2008