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A222977 Smallest member of sociable quadruples with signature: abundant, deficient, abundant, deficient. 5
18048976, 46722700, 4424606020, 73636082872, 88585861815, 90568599176, 518833084192, 1138168194296, 5793575538465 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
See comments in A222975.
1216327163895122388615 and 12015582455500352695694 are also terms. - Amiram Eldar, Apr 05 2024
LINKS
Jan Munch Pedersen, Known Sociable Numbers of order four, Tables of Aliquot Cycles.
EXAMPLE
The first quadruple of this type is: 18048976, 20100368, 18914992, 19252208, that are respectively abundant, deficient, abundant, deficient.
CROSSREFS
Sequence in context: A238071 A271445 A073032 * A203884 A209959 A140171
KEYWORD
nonn,more,changed
AUTHOR
Michel Marcus, Mar 11 2013
EXTENSIONS
a(8)-a(9) from Amiram Eldar, Apr 05 2024
STATUS
approved

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Last modified April 17 11:20 EDT 2024. Contains 371763 sequences. (Running on oeis4.)