OFFSET

1,1

COMMENTS

a(1)-a(2) were found by Moews and Moews in 1992 and 1995, respectively. a(3)-a(5) were found by Andre Needham in 2006 (see Pedersen link). - Amiram Eldar, Mar 24 2024

LINKS

David Moews and Paul C. Moews, A search for aliquot cycles and amicable pairs, Mathematics of computation, Vol. 61, No. 204 (1993), pp. 935-938.

Jan Munch Pedersen, Known Sociable Numbers of order different from four, Tables of Aliquot Cycles.

Jan Munch Pedersen, Sociable number of order 6, Tables of Aliquot Cycles.

Eric Weisstein's World of Mathematics, Sociable Numbers.

Wikipedia, Sociable number.

CROSSREFS

KEYWORD

nonn,more

AUTHOR

Eric W. Weisstein, May 22 2006

EXTENSIONS

a(4)-a(5) from Donovan Johnson, Sep 03 2008

STATUS

approved