OFFSET
1,1
COMMENTS
This is one of the 17 sets given in the link below.
LINKS
Carlos Rivera, Problem 35. More wrong turns..., The Prime Puzzles and Problems Connection.
Tatsuru Watanabe, New examples of the representation of 1 by the sum of reciprocals of semiprime numbers, arXiv:2009.03275 [math.NT], 2020.
CROSSREFS
KEYWORD
nonn,fini,full
AUTHOR
Michel Marcus, Sep 08 2020
STATUS
approved