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.

Showing 1-2 of 2 results.

A086218 Primes p such that 3^p - 2 is prime.

Original entry on oeis.org

2, 5, 37, 41, 317, 541, 2521
Offset: 1

Views

Author

Cino Hilliard, Aug 28 2003

Keywords

Comments

a(8) > 1180181, if it exists (based on the data at A014224). - Amiram Eldar, Jul 07 2024

Crossrefs

Subsequence of prime terms of A014224.
Cf. A086214, A089919.

Programs

Formula

a(n) = prime(A089919(n)). - Amiram Eldar, Jul 07 2024

Extensions

a(7) from Jorge Coveiro, Apr 10 2004

A180225 Primes of the form 3^m-2 where m are the terms of A123239.

Original entry on oeis.org

7, 450283905890997361, 36472996377170786401
Offset: 1

Views

Author

A.K. Devaraj, Aug 17 2010

Keywords

Comments

Subsequence of A086214. - R. J. Mathar, Aug 18 2010
The next term has 259 digits and is too large to display.

Links

Crossrefs

Cf. A086214, A123239.

Extensions

Erroneous 4th term deleted and offset corrected by R. J. Mathar, Aug 18 2010
Edited by N. J. A. Sloane, Aug 18 2010
Showing 1-2 of 2 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.