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A290105 a(n) = A156061(n) / A290103(n). 6
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 2, 3, 1, 2, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,21

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..10000

Index entries for sequences computed from indices in prime factorization

FORMULA

a(n) = A156061(n) / A290103(n).

MATHEMATICA

Table[If[n == 1, 1, Apply[Times, #]/Apply[LCM, #] &@ PrimePi[FactorInteger[n][[All, 1]]]], {n, 120}] (* Michael De Vlieger, Aug 14 2017 *)

PROG

(Scheme) (define (A290105 n) (/ (A156061 n) (A290103 n)))

CROSSREFS

Cf. A156061, A290103, A290104, A290106.

Sequence in context: A113515 A103754 A058665 * A191898 A043290 A194333

Adjacent sequences:  A290102 A290103 A290104 * A290106 A290107 A290108

KEYWORD

nonn

AUTHOR

Antti Karttunen, Aug 13 2017

STATUS

approved

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Last modified May 23 12:38 EDT 2019. Contains 323514 sequences. (Running on oeis4.)