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.

A062609 Numbers k such that 43^k - 42^k is prime or a strong pseudoprime.

Original entry on oeis.org

3, 13, 43, 211
Offset: 1

Views

Author

Mike Oakes, May 18 2001, May 19 2001

Keywords

Comments

a(5) > 10^5 - Robert Price, Dec 24 2012

Crossrefs

Cf. A000043, A057468, A059801-A059803, A062572-A062608, A215632, A062611-A062666.

Programs

  • PARI
    forprime(n=1, 9999, ispseudoprime(43^n-42^n) && print1(n", ")) \\ - M. F. Hasler, Sep 21 2013

Extensions

Edited by M. F. Hasler, Sep 21 2013

A215632 Numbers n such that 44^n - 43^n is prime or PRP.

Original entry on oeis.org

37, 283, 62903
Offset: 1

Views

Author

Jean-Louis Charton, Aug 18 2012

Keywords

Comments

No other term <= 68141.
a(4) > 10^5. - Robert Price, Sep 04 2012

Links

Crossrefs

Cf. A000043, A057468, A059801-A059803, A062572-A062609, A062611-A062666.

Programs

Extensions

Edited by M. F. Hasler, Sep 21 2013
Showing 1-2 of 2 results.

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

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