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A087349
n + (smallest prime-factor of n+1).
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
OFFSET
1,1
COMMENTS
a(n) = n + A020639(n+1).
LINKS
PROG
(Haskell)
a087349 n = a020639 (n + 1) + n -- Reinhard Zumkeller, Mar 31 2014
CROSSREFS
A061228(n) - 1.
Sequence in context: A229428 A348374 A029639 * A212631 A090792 A076877
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Oct 20 2003
STATUS
approved