A045782 - OEIS

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A045782

Number of factorizations of n for some n (range of A001055).

1, 2, 3, 4, 5, 7, 9, 11, 12, 15, 16, 19, 21, 22, 26, 29, 30, 31, 36, 38, 42, 45, 47, 52, 56, 57, 64, 66, 67, 74, 77, 92, 97, 98, 101, 105, 109, 118, 135, 137, 139, 141, 162, 165, 171, 176, 181, 189, 195, 198, 203, 212, 231, 249, 250, 254, 257, 267, 269, 272, 289 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	LINKS	`Florian Luca, Anirban Mukhopadhyay and Kotyada Srinivas, On the Oppenheim's "factorisatio numerorum" function`
	FORMULA	`The Luca et al. paper shows that the number of terms with a(n) <= x is x^{ O( log log log x / log log x )}. - N. J. A. Sloane, Jun 12 2009`
	CROSSREFS	`Cf. A001055, A045783.` `Sequence in context: A178434 A117290 A188551 * A184112 A064005 A026285` `Adjacent sequences: A045779 A045780 A045781 * A045783 A045784 A045785`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified February 16 09:56 EST 2012. Contains 205904 sequences.