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A341991 Multiplicative defect in a natural approximation for the terms of A341617. 1
1, 1, 1, 1, 2, 2, 1, 1, 4, 12, 6, 6, 6, 6, 3, 1, 8, 8, 12, 12, 6, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

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).

LINKS

Table of n, a(n) for n=1..22.

P. Miska and T. Ward, Stirling numbers and periodic points, arXiv:2102.07561 [math.NT], 2021.

FORMULA

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

EXAMPLE

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

CROSSREFS

Cf. A341617, A000142, A007947, A002110.

Sequence in context: A176663 A113021 A298261 * A152937 A331315 A064552

Adjacent sequences:  A341988 A341989 A341990 * A341992 A341993 A341994

KEYWORD

nonn,more

AUTHOR

Thomas Ward, Feb 25 2021

STATUS

approved

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Last modified August 3 03:52 EDT 2021. Contains 346435 sequences. (Running on oeis4.)