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A087349 n + (smallest prime-factor of n+1). +0
1
3, 5, 5, 9, 7, 13, 9, 11, 11, 21, 13, 25, 15, 17, 17, 33, 19, 37, 21, 23, 23, 45, 25, 29, 27, 29, 29, 57, 31, 61, 33, 35, 35, 39, 37, 73, 39, 41, 41, 81, 43, 85, 45, 47, 47, 93, 49, 55, 51, 53, 53, 105, 55, 59, 57, 59, 59, 117, 61, 121, 63, 65, 65, 69, 67, 133, 69, 71, 71 (list; graph; listen)
OFFSET

1,1

COMMENT

a(n) = n + A020639(n+1).

CROSSREFS

A061228(n) - 1.

Sequence in context: A063285 A112507 A029639 this_sequence A090792 A076877 A120841

Adjacent sequences: A087346 A087347 A087348 this_sequence A087350 A087351 A087352

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Oct 20 2003

page 1

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.


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