A069719 Integer quotients arising in A068418: sum of proper divisors is divided by cototient of terms of A068418.

2, 2, 2, 2, 3, 2, 2, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 4, 2, 3, 2, 2, 3, 4, 2, 2, 3, 3, 3, 2, 2, 3, 4, 3, 2, 3, 3, 2, 3, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 4, 2, 3, 3, 2, 2, 2, 4, 2, 2, 2, 3, 3

Offset

1,1

Links

Table of n, a(n) for n=1..68.

Formula

a(n) = A001065(A068418(n)) - A051953(A068418(n)).

Example

n=39: m=A068418(39)=130141440, sigma[m]-m=405550080, m-Phi[m]=101387520, quotient=4=a(39).

Crossrefs

Cf. A068418, A001065, A000203, A051953, A068414, A069714, A069737.

Sequence in context: A182860 A328830 A033947 * A316990 A359212 A320018

Adjacent sequences: A069716 A069717 A069718 * A069720 A069721 A069722

Keyword

nonn,more

Author

Labos Elemer, Apr 05 2002

Extensions

a(47)-a(68) from Donovan Johnson, May 27 2011

Status

approved