id:A069915 - OEIS Search Results

Search: id:A069915

Displaying 1-1 of 1 results found.

page 1

Sum of (1+phi)-divisors of n (cf. A061389).

+0
2

1, 3, 4, 3, 6, 12, 8, 7, 4, 18, 12, 12, 14, 24, 24, 11, 18, 12, 20, 18, 32, 36, 24, 28, 6, 42, 13, 24, 30, 72, 32, 31, 48, 54, 48, 12, 38, 60, 56, 42, 42, 96, 44, 36, 24, 72, 48, 44, 8, 18, 72, 42, 54, 39, 72, 56, 80, 90, 60, 72, 62, 96, 32, 35, 84, 144, 68, 54, 96, 144, 72 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`Multiplicative with a(p^e) = 1+Sum_{k=1..e, gcd(k, e)=1} p^k.`
	CROSSREFS	`Cf. A061389.` `Sequence in context: A046897 A109506 A000113 this_sequence A033634 A111970 A141730` `Adjacent sequences: A069912 A069913 A069914 this_sequence A069916 A069917 A069918`
	KEYWORD	`mult,nonn`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)Eunet.yu), Apr 23 2002`

page 1

Search completed in 0.002 seconds

Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

AT&T Labs Research