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A069737 Integer quotient defining A068418 is 3. 2
1320, 3696, 5520, 13800, 19872, 22560, 23688, 87000, 89964, 366720, 785808, 1235052, 1470720, 8690112, 45986616, 46862592, 78584640, 142588224, 231718968, 235668528, 377425920, 1598249952, 9518204448, 12026499072, 40964894160, 65368504980 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..26.

FORMULA

(Sum of proper divisors[m])/cototient[m]=3, where m is a term of A068418.

EXAMPLE

40th term in A068418 is m=142588224, sum-of-proper-divisors[m]=294860736, cototient[m]=98286912, quotient=3=294860736/98286912,

CROSSREFS

Cf. A068418, A068414, A069714.

Sequence in context: A248857 A260839 A157266 * A185464 A323802 A161586

Adjacent sequences:  A069734 A069735 A069736 * A069738 A069739 A069740

KEYWORD

nonn

AUTHOR

Labos Elemer, Apr 05 2002

EXTENSIONS

More terms from Labos Elemer, Apr 22 2002

a(22)-a(26) from Donovan Johnson, May 27 2011

STATUS

approved

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Last modified December 6 22:42 EST 2021. Contains 349567 sequences. (Running on oeis4.)