[seqfan] Re: Rank of a prime (Collatz/Syracuse)
Edwin Clark
eclark at math.usf.edu
Sun Feb 1 04:58:03 CET 2009
On Sun, 1 Feb 2009, Jacques Tramu wrote:
> So the question is :
> does any sequence terminates in "1" or with the" 15 23 9 22 15 loop" ?
> or 25 - ea(25) is 25 33 25
How about 14? 14->14
The first number I had trouble with was 18. The problem there is
eventually it gets to the prime 222312455509 and I have difficulty
figuring out pi(222312455509).
More information about the SeqFan
mailing list