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.

A083577 Primes in A003154.

Original entry on oeis.org

13, 37, 73, 181, 337, 433, 541, 661, 937, 1093, 2053, 2281, 2521, 3037, 3313, 5581, 5953, 6337, 6733, 7561, 7993, 8893, 10333, 10837, 11353, 12421, 12973, 13537, 15913, 18481, 20533, 21961, 25741, 27337, 32413, 33301, 36037, 36973, 42841
Offset: 1

Views

Author

Jason Earls, Jun 13 2003

Keywords

Comments

Except for the first 3 terms, a subsequence of A057199 (see comment in A057199). - Chai Wah Wu, Sep 16 2019
All terms are primes of the form 4*k + 1 (A002144), because terms of A003154 are of the form 12*k + 1. - John Elias, Jan 25 2021

Crossrefs

Programs

  • Mathematica
    Select[Array[6*#*(#-1)+1 &, 100], PrimeQ] (* Paolo Xausa, Mar 05 2024 *)
  • PARI
    for(n=1,150,s=6*n*(n-1)+1; if(isprime(s),print1(s",")))