cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A120459 Row sums of A120458.

Original entry on oeis.org

1, 3, 14, 161, 3124, 181259, 6732438, 493478345, 24995572328, 2255433009731, 470444892889498, 38714638073629151, 7749166585021832892, 1203906832960860262109, 121893712541593098356318, 17161342484454585041813495, 4656941131185104848296141136, 1513056629126772227843475996471
Offset: 0

Views

Author

Roger L. Bagula, Jun 24 2006

Keywords

Crossrefs

Programs

  • Mathematica
    a[n_] := 1 + Sum[Prime[k]^n, {k, 1, n}]; Array[a, 18, 0] (* Amiram Eldar, Jun 08 2025 *)
  • PARI
    a(n) = 1 + sum(k = 1, n, prime(k)^n); \\ Amiram Eldar, Jun 08 2025

Formula

From Amiram Eldar, Jun 08 2025: (Start)
a(n) = 1 + Sum_{k=1..n} prime(k)^n.
a(n) = A291140(n) + 1 for n >= 1. (End)

Extensions

More terms from Amiram Eldar, Jun 08 2025