Richard Guy wrote: > > Is there a misprint in A059926 ? > > 2^7 + 1 is 129, not 127. > > I get the period for 127 to be 12 (as illustrated, but > and for 129 to be 10 irrelevant?) I agree. The 12 should be a 10. The next two elements in this sequence are 1136, 1.