A052485 - OEIS

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A052485

Weak numbers (i.e. not powerful (1)): there is a prime p where p|n is true but p^2|n is not true.

2, 3, 5, 6, 7, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 26, 28, 29, 30, 31, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 78, 79, 80, 82, 83, 84 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`A112526(a(n)) = 0. [Reinhard Zumkeller, Sep 16 2011]`
	LINKS	`Reinhard Zumkeller, Table of n, a(n) for n = 1..10000`
	PROG	`(Haskell)` `a052485 n = a052485_list !! (n-1)` `a052485_list = filter ((== 0) . a112526) [1..]` `-- Reinhard Zumkeller, Sep 16 2011`
	CROSSREFS	`Cf. A001694. Not the same as A007916.` `Sequence in context: A085971 A175082 A007916 * A109421 A179983 A065872` `Adjacent sequences: A052482 A052483 A052484 * A052486 A052487 A052488`
	KEYWORD	`nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Mar 16 2000`

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Last modified February 17 20:50 EST 2012. Contains 206085 sequences.