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.

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A387144 a(n) is the least k>1 such that omega(k^n-1) = omega(k^n+1) with omega = A001221.

Original entry on oeis.org

3, 2, 2, 3, 3, 2, 3, 3, 2, 3, 2, 3483, 3, 2, 2, 2343, 8, 2, 3, 420, 2, 23, 2, 65, 3, 15, 2, 724, 2, 33, 15
Offset: 1

Views

Author

Hugo Pfoertner, Aug 18 2025

Keywords

Comments

a(32)...a(39): >1000, 2, 5, 8, >1000, 4, 8, 7.

Crossrefs

Programs

  • PARI
    a387144(n) = for(k=2, oo, if(omega(k^n-1)==omega(k^n+1), return(k)))
Showing 1-1 of 1 results.