login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A348501 a(n) = A348496(A276086(n)), where A348496(n) = A348495(n) / A003557(n). 4
1, 1, 1, 5, 1, 21, 1, 1, 1, 1, 3, 3, 1, 3, 1, 3, 1, 3, 1, 1, 1, 1, 1, 3, 1, 1, 5, 35, 3, 3, 1, 3, 5, 1, 1, 3, 3, 1, 1, 13, 3, 3, 1, 3, 1, 3, 1, 3, 13, 3, 1, 1, 1, 3, 3, 1, 5, 5, 39, 3, 1, 3, 1, 3, 1, 3, 3, 9, 3, 3, 9, 9, 1, 3, 1, 3, 1, 3, 1, 3, 1, 57, 1, 3, 57, 9, 15, 15, 3, 9, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 3, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Antti Karttunen, Table of n, a(n) for n = 0..11550

Index entries for sequences related to primorial base

FORMULA

a(n) = A348496(A276086(n)).

MATHEMATICA

Block[{b = MixedRadix[Reverse@ Prime@ Range@ 12]}, Map[Function[n, GCD[Total@ GCD[n, Range[n]], DivisorSum[n, #*(If[# < 2, 0, # Total[#2/#1 & @@@ FactorInteger[#]]] &[n/#]) &]]/Apply[Times, Map[#1^(#2 - 1) & @@ # &, FactorInteger[n]]]], Table[Function[k, Times @@ Power @@@ # &@ Transpose@ {Prime@ Range@ Length@ k, Reverse@ k}]@ IntegerDigits[n, b], {n, 0, 101}] ] ] (* Michael De Vlieger, Oct 21 2021 *)

PROG

(PARI)

\\ Needs also code from A348496:

A276086(n) = { my(m=1, p=2); while(n, m *= (p^(n%p)); n = n\p; p = nextprime(1+p)); (m); };

A348501(n) = A348496(A276086(n));

CROSSREFS

Cf. A003557, A276086, A348495, A348496.

Cf. also A348500, A348502.

Sequence in context: A144879 A049411 A070729 * A296306 A101693 A063476

Adjacent sequences:  A348498 A348499 A348500 * A348502 A348503 A348504

KEYWORD

nonn,base

AUTHOR

Antti Karttunen, Oct 21 2021

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 25 12:12 EDT 2022. Contains 356984 sequences. (Running on oeis4.)