id:A057939 - OEIS Search Results

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Number of prime factors of 5^n + 1 (counted with multiplicity).

+0
1

2, 2, 4, 2, 3, 3, 4, 3, 6, 4, 5, 3, 4, 3, 7, 3, 4, 5, 5, 4, 10, 4, 4, 4, 5, 5, 10, 3, 4, 7, 5, 4, 9, 6, 7, 6, 5, 4, 8, 5, 6, 6, 6, 3, 10, 3, 5, 5, 7, 7, 10, 5, 5, 6, 7, 7, 9, 3, 6, 6, 6, 4, 16, 4, 8, 7, 3, 7, 9, 7, 5, 6, 5, 5, 13, 5, 9, 10, 6, 6, 14, 6, 5, 7, 9, 5, 9, 7, 5, 12, 8, 4, 10, 6, 9, 7, 7, 7, 12 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`S. S. Wagstaff, Jr., Main Tables from the Cunningham Project.` `S. S. Wagstaff, Jr., The Cunningham Project`
	FORMULA	`a(n) = A057956(2n) - A057956(n) - T. D. Noe (noe(AT)sspectra.com), Jun 19 2003`
	CROSSREFS	`Cf. A057934-A057941, A054992.` `Cf. A057956.` `Sequence in context: A102640 A123674 A092607 this_sequence A061338 A135714 A103274` `Adjacent sequences: A057936 A057937 A057938 this_sequence A057940 A057941 A057942`
	KEYWORD	`nonn`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Oct 15 2000.`

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Last modified September 5 17:15 EDT 2008. Contains 143476 sequences.

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