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 A341991 #22 May 19 2021 00:24:56 %S A341991 1,1,1,1,2,2,1,1,4,12,6,6,6,6,3,1,8,8,12,12,6,6 %N A341991 Multiplicative defect in a natural approximation for the terms of A341617. %C A341991 A coarse approximation to A341617(n) is the primorial of (n-1), and the terms of this sequence are the quotient A341617(n) divided by the primorial of (n-1). %H A341991 P. Miska and T. Ward, <a href="https://arxiv.org/abs/2102.07561">Stirling numbers and periodic points</a>, arXiv:2102.07561 [math.NT], 2021. %F A341991 a(n) = A341617(n)/radical((n-1)!) = A341617(n)/(n-1)# = A341617(n)/A002110(n-1). %e A341991 For n = 3 it is known that A341617(3) = 2, so a(3) = 2/(3-1)! = 1. %Y A341991 Cf. A341617, A000142, A007947, A002110. %K A341991 nonn,more %O A341991 1,5 %A A341991 _Thomas Ward_, Feb 25 2021