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.

A128003 Numbers n such that (37^n - 1)/36 is prime.

Original entry on oeis.org

13, 71, 181, 251, 463, 521, 7321, 36473, 48157, 87421, 168527, 249341
Offset: 1

Views

Author

Alexander Adamchuk, Feb 11 2007

Keywords

Comments

7321 is a term found by Richard Fischer in 2004. - Alexander Adamchuk, Feb 11 2007
No other terms less than 100000. - Robert Price, Mar 18 2012

Programs

  • Mathematica
    Select[Prime[Range[100]], PrimeQ[(37^#-1)/36]&]
  • PARI
    is(n)=ispseudoprime((37^n-1)/36) \\ Charles R Greathouse IV, Feb 17 2017

Extensions

a(7) from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 05 2008
a(8)-a(10) from Robert Price, Mar 18 2012
a(11) from Paul Bourdelais, Aug 05 2019
a(12) from Paul Bourdelais, Aug 04 2020