OFFSET
1,1
COMMENTS
This is only conjectural, since we don't know that A003416 is complete (cf. A122726). - N. J. A. Sloane, Sep 17 2021
LINKS
Shyam Sunder Gupta, Perfect, Multiply Perfect, and Sociable Numbers, Exploring the Beauty of Fascinating Numbers, Springer (2025) Ch. 6, 185-207.
Eric Weisstein's World of Mathematics, Sociable Numbers.
CROSSREFS
KEYWORD
nonn,changed
AUTHOR
EXTENSIONS
More terms from Eric W. Weisstein, May 22 2006
Edited (including adding "conjectural" to definition) by N. J. A. Sloane, Sep 17 2021
STATUS
approved