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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. +0
5
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; listen)
OFFSET

1,1

CROSSREFS

Cf. A001694. Not the same as A007916.

Sequence in context: A094784 A085971 A007916 this_sequence A109421 A065872 A028741

Adjacent sequences: A052482 A052483 A052484 this_sequence A052486 A052487 A052488

KEYWORD

nonn

AUTHOR

Henry Bottomley (se16(AT)btinternet.com), Mar 16 2000

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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