id:A057957 - OEIS Search Results

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Number of prime factors of 4^n - 1 (counted with multiplicity).

+0
3

1, 2, 3, 3, 3, 5, 3, 4, 6, 6, 4, 7, 3, 6, 7, 5, 3, 10, 3, 8, 8, 7, 4, 10, 7, 7, 9, 8, 6, 13, 3, 7, 9, 7, 9, 14, 5, 7, 8, 10, 5, 14, 5, 10, 13, 9, 6, 13, 5, 14, 11, 10, 6, 15, 12, 11, 9, 9, 6, 17, 3, 8, 14, 9, 9, 15, 5, 11, 9, 16, 6, 19, 6, 10, 14, 11, 10, 18, 5, 13, 16, 10, 8, 19, 7, 10, 11 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`S. S. Wagstaff, Jr., Main Tables from the Cunningham Project.` `S. S. Wagstaff, Jr., The Cunningham Project`
	FORMULA	`Mobius transform of A085029 - T. D. Noe (noe(AT)sspectra.com), Jun 19 2003`
	CROSSREFS	`Cf. A057951-A057958, A046051.` `Cf. A085029.` `Adjacent sequences: A057954 A057955 A057956 this_sequence A057958 A057959 A057960` `Sequence in context: A103359 A020481 A066660 this_sequence A076559 A102601 A092308`
	KEYWORD	`nonn`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Nov 15 2000.`

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Last modified November 8 20:39 EST 2009. Contains 166234 sequences.

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