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A087789 Smallest number greater than n having the same greatest prime factor as n; a(1)=1. 0
1, 4, 6, 8, 10, 9, 14, 16, 12, 15, 22, 18, 26, 21, 20, 32, 34, 24, 38, 25, 28, 33, 46, 27, 30, 39, 36, 35, 58, 40, 62, 64, 44, 51, 42, 48, 74, 57, 52, 45, 82, 49, 86, 55, 50, 69, 94, 54, 56, 60, 68, 65, 106, 72, 66, 63, 76, 87, 118, 75, 122, 93, 70, 128, 78, 77, 134, 85 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..68.

FORMULA

a(n)=A071830(n), n>1. [From R. J. Mathar, Sep 11 2008]

CROSSREFS

Cf. A006530.

Sequence in context: A071537 A161396 A145256 * A071830 A167146 A020891

Adjacent sequences:  A087786 A087787 A087788 * A087790 A087791 A087792

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Oct 07 2003

STATUS

approved

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Last modified December 21 05:45 EST 2014. Contains 252296 sequences.