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A078311
Smallest prime factor of n*rad(n)+1, where rad=A007947 (squarefree kernel).
3
2, 5, 2, 3, 2, 37, 2, 17, 2, 101, 2, 73, 2, 197, 2, 3, 2, 109, 2, 3, 2, 5, 2, 5, 2, 677, 2, 3, 2, 17, 2, 5, 2, 13, 2, 7, 2, 5, 2, 401, 2, 5, 2, 3, 2, 29, 2, 17, 2, 3, 2, 3, 2, 5, 2, 5, 2, 5, 2, 1801, 2, 5, 2, 3, 2, 4357, 2, 3, 2, 13, 2, 433, 2, 5477, 2, 3, 2, 5, 2, 3, 2, 5, 2, 3529, 2, 13
OFFSET
1,1
COMMENTS
a(n)=A020639(A078310(n)).
LINKS
PROG
(Haskell)
a078311 = a020639 . a078310 -- Reinhard Zumkeller, Jul 23 2013
CROSSREFS
Cf. A078312.
Sequence in context: A102707 A134486 A088006 * A132743 A192885 A246904
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Nov 23 2002
STATUS
approved