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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
OFFSET
1,2
FORMULA
a(n)=A071830(n), n>1. [From R. J. Mathar, Sep 11 2008]
CROSSREFS
Cf. A006530.
Sequence in context: A071537 A161396 A145256 * A071830 A276982 A340846
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Oct 07 2003
STATUS
approved