A227767 First n-fold perfect number divided by 30240, or 0 if the quotient is not an integer.

0, 0, 0, 1, 468996, 5104019711831040, 4672979429478781357799252736061029208476969074688000

Offset: 1

Author

Jonathan Sondow, Jul 29 2013

Keywords

• nonn

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.

Examples

			The first 5-fold perfect number is A007539(5) = 14182439040, so a(5) = 14182439040/30240 = 468996.
		

Links

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

Crossrefs

Cf. A007539, A227765, A227766, A227768, A227769.

Formula

a(n) = A007539(n)/30240 if 4 <= n <= 8.