View Single Post
Old 2020-11-07, 15:58   #6
Nov 2016

1011000000112 Posts

so the sequences A003416 and A122726 might miss numbers (i.e. it is unknown whether there are members of sociable number cycle <= 1799281330 other than numbers listed in A003416), however, the smallest number whose aliquot sequence has not yet been fully determined (276) cannot be member of sociable number cycle, since it is an untouchable number (A005114), however, the number 56440 might be.

Last fiddled with by sweety439 on 2020-11-07 at 16:01
sweety439 is offline   Reply With Quote