[seqfan] A098550.

[L. Edson Jeffery]

I did not want to add clutter to A098550 with a comment that is not
relevant, but it appears that the sequence S of fixed points of A098550 is
finite and

S = {1, 2, 3, 4, 12, 50, 86}.

I was surprised to find that many terms, so I wonder if there are more.

I checked this for all n <= 10^4 using a Mathematica program based on the
existing code in A098550, but that code, which took several hours to run
even in its original form, is too slow to be useful for trying to extend S.

Ed Jeffery