id:A101301 - OEIS Search Results

Search: id:A101301

Displaying 1-1 of 1 results found.

page 1

a(n) = Sum_{x=1..n} (Phi(Prime(x))).

+0
1

1, 3, 7, 13, 23, 35, 51, 69, 91, 119, 149, 185, 225, 267, 313, 365, 423, 483, 549, 619, 691, 769, 851, 939, 1035, 1135, 1237, 1343, 1451, 1563, 1689, 1819, 1955, 2093, 2241, 2391, 2547, 2709, 2875, 3047, 3225, 3405, 3595, 3787, 3983, 4181, 4391, 4613, 4839 (list; graph; listen)

	OFFSET	`0,2`
	MAPLE	`seq((sum(phi(ithprime(x)), x=1..a)), a=1..100);`
	CROSSREFS	`Adjacent sequences: A101298 A101299 A101300 this_sequence A101302 A101303 A101304` `Sequence in context: A053001 A053607 A124129 this_sequence A103116 A075321 A131205`
	KEYWORD	`nonn`
	AUTHOR	`Jorge Coveiro (jorgecoveiro(AT)yahoo.com), Dec 22 2004`

page 1

Search completed in 0.002 seconds

Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

AT&T Labs Research