OFFSET
1,1
COMMENTS
k is in sequence iff k can never be reached when iterating the map x -> A001065(x) starting with any odd number m.
Assuming the stronger version of Goldbach conjecture, iff k is in the sequence, there are infinitely many odd numbers whose aliquot sequence contain k.
LINKS
Andrew R. Booker, Finite connected components of the aliquot graph, arXiv:1610.07471 [math.NT], 2017.
Jean-Luc Garambois, Le graphe infini des suites aliquotes (in French).
Wikipedia, Aliquot sequence
CROSSREFS
KEYWORD
nonn
AUTHOR
Jinyuan Wang, Jun 25 2023
STATUS
approved