id:A086334 - OEIS Search Results

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Number of highly composite numbers having n distinct prime factors.

+0
2

1, 2, 5, 6, 12, 11, 16, 14, 19, 21, 15, 23, 18, 17, 22, 20, 30, 23, 31, 25, 28, 33, 27, 28, 36, 27, 33, 35, 33, 36, 46, 37, 47, 36, 38, 36, 48, 43, 37, 43, 39, 40, 45, 36, 37, 36, 47, 46, 43, 43, 48, 43, 44, 47, 58, 52, 50, 51, 57, 50, 51, 56, 66, 67, 66, 67, 94, 76, 98, 74, 70, 71, 71 (list; graph; listen)

	OFFSET	`0,2`
	LINKS	`T. D. Noe, Table of n, a(n) for n=0..4000 (using data from Flammenkamp)` `A. Flammenkamp, First 1200 highly composite numbers`
	EXAMPLE	`a(0) = 1 because there is 1 highly composite number that has no prime factors; a(9) = 21 because there are 21 highly composite numbers that have 9 distinct prime factors.`
	CROSSREFS	`Cf. A002182.` `Sequence in context: A051217 A110975 A069789 this_sequence A057518 A023143 A085206` `Adjacent sequences: A086331 A086332 A086333 this_sequence A086335 A086336 A086337`
	KEYWORD	`nonn`
	AUTHOR	`Lekraj Beedassy (blekraj(AT)yahoo.com), Sep 01 2003`
	EXTENSIONS	`Corrected and extended by Graeme McRae (g_m(AT)mcraefamily.com), Apr 30 2006`

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.

AT&T Labs Research