id:A160649 - OEIS Search Results

Search: id:A160649

Displaying 1-1 of 1 results found.

page 1

a(1)=2. a(n) = a(n-1) + A001222(a(n-1)); where A001222(m) is the sum of prime-factorization exponents of m (or, A001222(m) is the number of primes dividing m, with multiplicity).

+0
2

2, 3, 4, 6, 8, 11, 12, 15, 17, 18, 21, 23, 24, 28, 31, 32, 37, 38, 40, 44, 47, 48, 53, 54, 58, 60, 64, 70, 73, 74, 76, 79, 80, 85, 87, 89, 90, 94, 96, 102, 105, 108, 113, 114, 117, 120, 125, 128, 135, 139, 140, 144, 150, 154, 157, 158, 160, 166, 168, 173, 174, 177, 179 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`A001222(a(n)) = A160650(n) = a(n+1) - a(n).`
	CROSSREFS	`Cf. A001222, A160650.` `Sequence in context: A165514 A123586 A039500 this_sequence A018502 A023024 A018362` `Adjacent sequences: A160646 A160647 A160648 this_sequence A160650 A160651 A160652`
	KEYWORD	`nonn`
	AUTHOR	`Leroy Quet (q1qq2qqq3qqqq(AT)yahoo.com), May 21 2009`
	EXTENSIONS	`Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Jun 16 2009`

page 1

Search completed in 0.002 seconds

Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

AT&T Labs Research