id:A039778 - OEIS Search Results

Search: id:A039778

Displaying 1-1 of 1 results found.

page 1

phi(n) is equal to the sum of prime factors and exponents of n+1.

+0
1

32, 38, 54, 56, 84, 20720 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`phi(38)=18, 39=3^1*13^1, 3+1+13+1=18.`
	CROSSREFS	`Cf. A000010, A008474.` `Sequence in context: A030094 A082591 A070624 this_sequence A167309 A159007 A114042` `Adjacent sequences: A039775 A039776 A039777 this_sequence A039779 A039780 A039781`
	KEYWORD	`nonn`
	AUTHOR	`Olivier Gerard (olivier.gerard(AT)gmail.com)`
	EXTENSIONS	`Next term if it exists is greater than 10^8, Naohiro Nomoto (6284968128(AT)geocities.co.jp), Jun 21 2001.`

page 1

Search completed in 0.002 seconds

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.