A227768 First n-fold perfect number divided by 14182439040, or 0 if the quotient is not an integer.

0, 0, 0, 0, 1, 0, 9963793783910270786529635084437882643939328000

Offset

1,7

Comments

The first n-fold perfect numbers are A007539(n) = 1, 6, 120, 30240, 14182439040, .., for n = 1, 2, 3, 4, 5, ...

For additional comments, references, links, and cross-refs, 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 6-fold 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