This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 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 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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

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