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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A373459 Expansion of Sum_{p prime} x^p/(1 - (p*x)^p). 1
 0, 1, 1, 4, 1, 43, 1, 64, 729, 3381, 1, 20707, 1, 827639, 10297066, 16384, 1, 14414443, 1, 30517840269, 678610493338, 285312719187, 1, 10464547507, 95367431640625, 302875123369469, 282429536481, 558545864150392871, 1, 298030849742873568, 1, 1073741824 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 LINKS Table of n, a(n) for n=1..32. FORMULA a(n) = Sum_{p|n prime} p^(n - p). If p is prime, a(p) = 1. PROG (PARI) a(n) = sumdiv(n, d, isprime(d)*d^(n-d)); CROSSREFS Cf. A200768, A373458. Sequence in context: A193962 A369868 A302441 * A269906 A092667 A060627 Adjacent sequences: A373455 A373456 A373458 * A373460 A373461 A373464 KEYWORD nonn,easy AUTHOR Seiichi Manyama, Jun 06 2024 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.

Last modified July 16 08:10 EDT 2024. Contains 374345 sequences. (Running on oeis4.)