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A008887 Aliquot sequence starting at 60. 1
60, 108, 172, 136, 134, 70, 74, 40, 50, 43, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

REFERENCES

R. K. Guy, Unsolved Problems in Number Theory, B6.

LINKS

Christophe CLAVIER, Aliquot Sequences

MAPLE

f := proc(n) option remember; if n = 0 then 60; else sigma(f(n-1))-f(n-1); fi; end:

CROSSREFS

Sequence in context: A043221 A039398 A044001 * A182683 A174601 A096490

Adjacent sequences:  A008884 A008885 A008886 * A008888 A008889 A008890

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 17 08:44 EST 2012. Contains 205998 sequences.