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A015706 Numbers n such that n divides phi(n) * sigma(n), n odd. 1
1, 117, 135, 775, 819, 891, 1521, 1701, 2325, 3159, 3375, 4455, 5733, 6875, 6975, 10935, 11907, 19773, 20625, 20925, 22113, 22275, 24025, 40131, 41067, 43875, 44375, 49005, 61875, 62775, 68607, 72075, 75625, 83349, 84375, 85293 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

REFERENCES

R. K. Guy, Divisors and desires, Amer. Math. Monthly, 104 (1997), 359-360.

LINKS

Donovan Johnson, Table of n, a(n) for n = 1..3000

CROSSREFS

Cf. A011775.

Sequence in context: A176568 A023682 A084344 * A095625 A109023 A201021

Adjacent sequences:  A015703 A015704 A015705 * A015707 A015708 A015709

KEYWORD

nonn

AUTHOR

Robert G. Wilson v (rgwv(AT)rgwv.com)

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Last modified February 16 20:35 EST 2012. Contains 205962 sequences.