A069737 Integer quotient defining A068418 is 3.

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

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 A350612

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