id:A057335 - OEIS Search Results

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Essentially sequence A055932 generated using A000120, hence sorted by number of factors.

+0
7

1, 2, 4, 6, 8, 12, 18, 30, 16, 24, 36, 60, 54, 90, 150, 210, 32, 48, 72, 120, 108, 180, 300, 420, 162, 270, 450, 630, 750, 1050, 1470, 2310, 64, 96, 144, 240, 216, 360, 600, 840, 324, 540, 900, 1260, 1500, 2100, 2940, 4620, 486, 810, 1350, 1890, 2250, 3150, 4410 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Note that for n>0 the prime divisors of a(n) are consecutive primes starting with 2. All of the least prime signatures (A025487) are included; with the other values forming A056808.`
	FORMULA	`a(n)= A057334(n) * a (repeated)`
	CROSSREFS	`Cf. A057334, A055932 and A056808.` `Sequence in context: A079212 A141452 A050597 this_sequence A126907 A118563 A164145` `Adjacent sequences: A057332 A057333 A057334 this_sequence A057336 A057337 A057338`
	KEYWORD	`easy,nonn`
	AUTHOR	`Alford Arnold (Alford1940(AT)aol.com), Aug 27 2000`
	EXTENSIONS	`More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Mar 29 2003`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

AT&T Labs Research