id:A139432 - OEIS Search Results

Search: id:A139432

Displaying 1-1 of 1 results found.

page 1

a(0)=0. For n>=1, a(n) = a(n-1) - d(n) if a(n-1) >= d(n); a(n) = a(n-1) + d(n) if a(n-1) < d(n); where d(n) is the number of positive divisors of n.

+0
2

0, 1, 3, 1, 4, 2, 6, 4, 0, 3, 7, 5, 11, 9, 5, 1, 6, 4, 10, 8, 2, 6, 2, 0, 8, 5, 1, 5, 11, 9, 1, 3, 9, 5, 1, 5, 14, 12, 8, 4, 12, 10, 2, 0, 6, 0, 4, 2, 12, 9, 3, 7, 1, 3, 11, 7, 15, 11, 7, 5, 17, 15, 11, 5, 12, 8, 0, 2, 8, 4, 12, 10, 22, 20, 16, 10, 4, 0, 8, 6, 16, 11, 7, 5, 17, 13, 9, 5, 13, 11, 23, 19 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`a(A139433(n)) = 0.`
	LINKS	`Leroy Quet, Home Page (listed in lieu of email address)`
	CROSSREFS	`Cf. A139433.` `Sequence in context: A162341 A066728 A066899 this_sequence A115208 A067060 A115659` `Adjacent sequences: A139429 A139430 A139431 this_sequence A139433 A139434 A139435`
	KEYWORD	`nonn,new`
	AUTHOR	`Leroy Quet Apr 21 2008`
	EXTENSIONS	`More terms from Sean A. Irvine (sairvin(AT)xtra.co.nz), Dec 02 2009`

page 1

Search completed in 0.002 seconds

Last modified December 21 10:15 EST 2009. Contains 171081 sequences.

AT&T Labs Research