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 A241247 #16 Jul 11 2020 23:45:11
%S A241247 2,21,352,8065,231876,7951069,314931968,14095941633,701590424500,
%T A241247 38358147922501,2281458125531520,146469277526152321,
%U A241247 10084388675810865248,740560093656498673965,57738578482070455269376,4760258648137662340202497,413561386818608994516491316
%N A241247 a(n) = Sum_{k=0..n} n^k * binomial(n,k)^3.
%H A241247 Vincenzo Librandi, <a href="/A241247/b241247.txt">Table of n, a(n) for n = 1..200</a>
%F A241247 a(n) ~ exp(1 - 3*n^(1/3)/2 + 3*n^(2/3)) * n^(n-2/3) / (2*Pi*sqrt(3)) * (1 + 5/(4*n^(1/3))).
%t A241247 Table[Sum[n^k*Binomial[n,k]^3,{k,0,n}],{n,1,20}]
%t A241247 Table[HypergeometricPFQ[{-n,-n,-n},{1,1},-n],{n,1,20}]
%o A241247 (PARI) a(n) = sum(k=0, n, n^k*binomial(n,k)^3); \\ _Michel Marcus_, Jul 11 2020
%Y A241247 Cf. A187021, A234971.
%K A241247 nonn,easy
%O A241247 1,1
%A A241247 _Vaclav Kotesovec_, Apr 18 2014