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 A091038 #7 Jun 29 2023 18:36:22 %S A091038 1,840,619200,447552000,322444800000,232185139200000, %T A091038 167176286208000000,120367284387840000000,86664487757414400000000, %U A091038 62398436345118720000000000,44926874787659120640000000000 %N A091038 Second column (k=6) of array A090216 ((5,5)-Stirling2) divided by 5*5! = 600. %H A091038 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (840, -86400). %F A091038 a(n) = A090216(n, 6)/(5*5!) = (5!^(n-2))*(6^(n-1)-1)/5, n>=2. %F A091038 G.f.: (x^2)/((1-6!*x)*(1-5!*x)) = (x/(5*5!))*(1/(1-6!*x)-1/(1-5!*x)). %Y A091038 Cf. A090216, A091037 (second column of (4, 4)-Stirling2 array divided by 96). %K A091038 nonn,easy %O A091038 2,2 %A A091038 _Wolfdieter Lang_, Jan 23 2004