id:A003963 - OEIS Search Results

Search: id:A003963

Displaying 1-1 of 1 results found.

page 1

Fully multiplicative with a(p(k)) = k for k-th prime p.

+0
6

1, 1, 2, 1, 3, 2, 4, 1, 4, 3, 5, 2, 6, 4, 6, 1, 7, 4, 8, 3, 8, 5, 9, 2, 9, 6, 8, 4, 10, 6, 11, 1, 10, 7, 12, 4, 12, 8, 12, 3, 13, 8, 14, 5, 12, 9, 15, 2, 16, 9, 14, 6, 16, 8, 15, 4, 16, 10, 17, 6, 18, 11, 16, 1, 18, 10, 19, 7, 18, 12, 20, 4, 21, 12, 18, 8, 20, 12, 22, 3, 16, 13, 23, 8, 21, 14, 20, 5 (list; graph; listen)

	OFFSET	`1,3`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..10000`
	FORMULA	`If n = Product p(k)^e(k) then a(n) = Product k^e(k).` `Multiplicative with a(p^e) = A000720(p)^e. - David W. Wilson (davidwwilson(AT)comcast.net), Aug 01, 2001.`
	CROSSREFS	`Adjacent sequences: A003960 A003961 A003962 this_sequence A003964 A003965 A003966` `Sequence in context: A007337 A056892 A136523 this_sequence A003960 A124223 A094193`
	KEYWORD	`nonn,nice,easy,mult`
	AUTHOR	`Marc LeBrun (mlb(AT)well.com)`

page 1

Search completed in 0.002 seconds

Last modified October 13 02:33 EDT 2008. Contains 144830 sequences.

AT&T Labs Research