[seqfan] Re: Franklin's A166133 - does it die?

[M. F. Hasler]

On Wed, Apr 1, 2015 at 4:15 PM, Neil Sloane <njasloane at gmail.com> wrote:
> A166133  is defined by
> After initial 1,2,4, a(n+1) is the smallest divisor of a(n)^2-1 that has
> not yet appeared in the sequence.

FWIW:
I just submitted oeis.org/A255833 :
Least index i such that A166133(i)=n, or 0 if no such i exists.
If A166133 is a permutation, as conjectured, then this is the inverse
permutation.
-- 
Maximilian