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.

A256622 Primes p such that the decimal expansion of p remains prime under four iterations of base-10 to base-2 conversion.

Original entry on oeis.org

9632552297, 23971039429, 32460766253, 55325366053, 75883883641, 87824771197, 91754975491, 91989527023, 97696323983
Offset: 1

Views

Author

Sebastian Petzelberger, Apr 07 2015

Keywords

Comments

Jim Fougeron and Farideh Firoozbakht independently found the first term 9632552297.
When does five iterations start?

Links

  • Carlos Rivera, Puzzle 280, The Prime Puzzles & Problems Connection.

Crossrefs

Cf. A065720, A123266, A256621.

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

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