id:A085723 - OEIS Search Results

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Number of prime divisors of n^n+1 (counted with multiplicity).

+0
1

1, 1, 3, 1, 3, 3, 5, 3, 4, 3, 7, 4, 5, 6, 9, 2, 4, 9, 6, 3, 6, 4, 10, 6, 7, 4, 12, 6, 7, 8, 10, 4, 10, 5, 14, 5, 5, 6, 10, 10, 6, 10, 9, 8, 14 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`16^16+1 = 274177 * 67280421310721 is a semiprime. Where is the next?`
	CROSSREFS	`Sequence in context: A029153 A060241 A145015 this_sequence A165027 A078555 A087891` `Adjacent sequences: A085720 A085721 A085722 this_sequence A085724 A085725 A085726`
	KEYWORD	`nonn`
	AUTHOR	`Jason Earls (zevi_35711(AT)yahoo.com), Jul 20 2003`
	EXTENSIONS	`More terms from Ray G. Opao (1260(AT)email.com), Aug 25 2004`

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

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