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A222977 Smallest member of sociable quadruples with signature: abundant, deficient, abundant, deficient. 5
18048976, 46722700, 4424606020, 73636082872, 88585861815, 90568599176, 518833084192 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

See comments in A222975.

LINKS

Table of n, a(n) for n=1..7.

J. M. Pedersen, Known Sociable Numbers of order four

EXAMPLE

The first quadruple of this type is: 18048976, 20100368, 18914992, 19252208, that are respectively abundant, deficient, abundant, deficient.

CROSSREFS

Cf. A090615, A222975, A222976, A222978.

Sequence in context: A238071 A271445 A073032 * A203884 A209959 A140171

Adjacent sequences: A222974 A222975 A222976 * A222978 A222979 A222980

KEYWORD

nonn

AUTHOR

Michel Marcus, Mar 11 2013

STATUS

approved

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Last modified December 3 20:52 EST 2022. Contains 358543 sequences. (Running on oeis4.)