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Search: id:A156899
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A156899 a(n) = the largest prime power <= the nth positive squarefree integer. +0
4
1, 2, 3, 5, 5, 7, 9, 11, 13, 13, 13, 17, 19, 19, 19, 23, 25, 29, 29, 31, 32, 32, 32, 37, 37, 37, 41, 41, 43, 43, 47, 49, 53, 53, 53, 53, 59, 61, 61, 64, 64, 67, 67, 67, 71, 73, 73, 73, 73, 79, 81, 83, 83, 83, 83, 89, 89, 89, 89, 89, 97, 101, 101, 103, 103, 103, 107, 109, 109 (list; graph; listen)
OFFSET

1,2

COMMENT

The first positive squarefree integer is considered to be 1 here.

CROSSREFS

Cf. A081217, A156898, A156900, A005117, A000961.

Sequence in context: A023838 A089625 A092391 this_sequence A156898 A084754 A120724

Adjacent sequences: A156896 A156897 A156898 this_sequence A156900 A156901 A156902

KEYWORD

nonn

AUTHOR

Leroy Quet (q1qq2qqq3qqqq(AT)yahoo.com), Feb 17 2009

EXTENSIONS

Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Jun 19 2009

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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