

A214898


Conway's subprime Fibonacci sequence, largest loop elements.


9




OFFSET

1,1


COMMENTS

Similar to the Fibonacci recursion starting with a pair of positive integers, but each new nonprime term is divided by its least prime factor. Recursion enters a loop of length A214897(n), of which the largest element a(n) is prime (this sequence).


LINKS

Table of n, a(n) for n=1..7.
Richard K. Guy, Tanya Khovanova and Julian Salazar, Conway's subprime Fibonacci sequences, arXiv:1207.5099v1 [math.NT]


MATHEMATICA

see A214674


CROSSREFS

Cf. A000045, A020639, A175723, A214551, A014682, A214674, A214892A214898.
Sequence in context: A243409 A281195 A109555 * A230396 A028485 A034227
Adjacent sequences: A214895 A214896 A214897 * A214899 A214900 A214901


KEYWORD

nonn


AUTHOR

Wouter Meeussen, Jul 29 2012


STATUS

approved



