

A227768


First nfold perfect number divided by 14182439040, or 0 if the quotient is not an integer.


6




OFFSET

1,7


COMMENTS

The first nfold perfect numbers are A007539(n) = 1, 6, 120, 30240, 14182439040, .., for n = 1, 2, 3, 4, 5, ...
For additional comments, references, links, and crossrefs, see A007539 and A227765.


LINKS

T. D. Noe, Table of n, a(n) for n = 1..8


FORMULA

a(n) = A007539(n)/14182439040 for n = 5, 7, 8.


EXAMPLE

The first 6fold perfect number is A007539(6) = 154345556085770649600, and 154345556085770649600/14182439040 = 119711504640/11 is not an integer, so a(6) = 0.


CROSSREFS

Cf. A007539, A227765, A227766, A227767, A227769.
Sequence in context: A160678 A095484 A272522 * A095486 A095488 A292858
Adjacent sequences: A227765 A227766 A227767 * A227769 A227770 A227771


KEYWORD

nonn


AUTHOR

Jonathan Sondow, Jul 29 2013


STATUS

approved



