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 A317171 #12 Oct 05 2018 17:24:54 %S A317171 1,1,10,222,8824,553870,50545008,6328330344,1041597412224, %T A317171 218138133235680,56650689388344000,17868469522986145536, %U A317171 6728682216722958185472,2981868816113406609186576,1536217706761623823662025728,910442461680276910819097616000,615053979239579281793375485526016 %N A317171 a(n) = n! * [x^n] 1/(1 + n*log(1 - x)). %F A317171 a(n) = Sum_{k=0..n} |Stirling1(n,k)|*n^k*k!. %F A317171 a(n) ~ sqrt(2*Pi) * n^(2*n + 1/2) / exp(n - 1/2). - _Vaclav Kotesovec_, Jul 23 2018 %t A317171 Table[n! SeriesCoefficient[1/(1 + n Log[1 - x]), {x, 0, n}], {n, 0, 16}] %t A317171 Join[{1}, Table[Sum[Abs[StirlingS1[n, k]] n^k k!, {k, n}], {n, 16}]] %Y A317171 Cf. A007840, A088500, A094420, A242817, A317172. %Y A317171 Main diagonal of A320079. %K A317171 nonn %O A317171 0,3 %A A317171 _Ilya Gutkovskiy_, Jul 23 2018