A007539 - OEIS

This site is supported by donations to The OEIS Foundation.

A007539

First n-fold perfect number.
(Formerly M4297)

1, 6, 120, 30240, 14182439040, 154345556085770649600, 141310897947438348259849402738485523264343544818565120000, 8268099687077761372899241948635962893501943883292455548843932421413884476391773708366277840568053624227289196057256213348352000000000 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	REFERENCES	`A. H. Beiler, Recreations in the Theory of Numbers, Dover, NY, 1964, p. 22.` `A. Brousseau, Number Theory Tables. Fibonacci Association, San Jose, CA, 1973, p. 138.` `R. K. Guy, Unsolved Problems in Number Theory, B2.` `N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).`
	LINKS	`C. K. Caldwell, The Prime Glossary, multiply perfect` `Achim Flammenkamp, The Multiply Perfect Numbers Page` `Fred Helenius, Link to Glossary and Lists` `Walter Nissen, Abundancy : Some Resources`
	CROSSREFS	`Cf. A000396, A005820, A027687, A046060, A046061.` `Cf. A007691, A072002.` `Sequence in context: A012475 A053777 A023199 * A040996 A110442 A137149` `Adjacent sequences: A007536 A007537 A007538 * A007540 A007541 A007542`
	KEYWORD	`nonn,nice`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`
	EXTENSIONS	`More terms sent by Robert G. Wilson v (rgwv(AT)rgwv.com), Nov 30 2000`

Content is available under The OEIS End-User License Agreement .

Last modified February 16 20:38 EST 2012. Contains 205962 sequences.