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A341991 Multiplicative defect in a natural approximation for the terms of A341617. 1

%I #22 May 19 2021 00:24:56

%S 1,1,1,1,2,2,1,1,4,12,6,6,6,6,3,1,8,8,12,12,6,6

%N Multiplicative defect in a natural approximation for the terms of A341617.

%C 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 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 a(n) = A341617(n)/radical((n-1)!) = A341617(n)/(n-1)# = A341617(n)/A002110(n-1).

%e For n = 3 it is known that A341617(3) = 2, so a(3) = 2/(3-1)! = 1.

%Y Cf. A341617, A000142, A007947, A002110.

%K nonn,more

%O 1,5

%A _Thomas Ward_, Feb 25 2021

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Last modified March 28 04:13 EDT 2024. Contains 371235 sequences. (Running on oeis4.)