A214895 Conway's subprime Fibonacci sequence starting with (23, 162).

23, 162, 37, 199, 118, 317, 145, 231, 188, 419, 607, 513, 560, 37, 199

Offset: 1

Author

Wouter Meeussen, Jul 29 2012

Keywords

• nonn

Comments

Similar to the Fibonacci recursion starting with (23, 162), but each new nonprime term is divided by its least prime factor. Sequence enters a loop of length 11 after 4 terms on reaching (37, 199).

Links

• Richard K. Guy, Tanya Khovanova, and Julian Salazar, Conway's subprime Fibonacci sequences, arXiv:1207.5099 [math.NT]

Crossrefs

Cf. A000045, A020639, A175723, A214551, A014682, A214674, A214892-A214898.

Programs

Mathematica

see A214674