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 A143168 #11 Dec 24 2017 09:01:38 %S A143168 1,18,345,7650,196245,5755050,190482705,7034400450,286988226525, %T A143168 12826061498250,623403611055225,32747785180560450,1849179329801929125, %U A143168 111713055889014830250,7190273917194645902625,491244630824362410245250,35508203161436371983742125 %N A143168 Third column of triangle A000369: |S2(-3; n+3, 3)|. %F A143168 a(n) = A000369(n+3,3) = |S2(-3; n+3, 3)|, n >= 0. %F A143168 E.g.f.: (d^3/dx^3)((1-(1-4*x)^(1/4))^3)/3! = (-1/2)*(20*x - 5 - 21*(1-4*x)^(1/2)+24*(1-4*x)^(3/4))/(1-4*x)^(13/4). %o A143168 (PARI) lista(nn) = default(seriesprecision, nn); Vec(serlaplace(deriv(deriv(deriv(((1-(1-4*x)^(1/4))^3)/3!))))); \\ _Michel Marcus_, Dec 24 2017 %Y A143168 Second column of A000369 is A143167, fourth one is A143169. %K A143168 nonn,easy %O A143168 0,2 %A A143168 _Wolfdieter Lang_, Sep 15 2008