A078312 Greatest prime factor of n*rad(n)+1, where rad=A007947 (squarefree kernel).

2, 5, 5, 3, 13, 37, 5, 17, 7, 101, 61, 73, 17, 197, 113, 11, 29, 109, 181, 67, 17, 97, 53, 29, 7, 677, 41, 131, 421, 53, 37, 13, 109, 89, 613, 31, 137, 17, 761, 401, 29, 353, 37, 19, 13, 73, 17, 17, 43, 167, 1301, 41, 281, 13, 89, 157, 13, 673, 1741, 1801, 1861, 769

Offset

1,1

Comments

a(n)=A006530(A078310(n)).

Links

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Prog

(Haskell)
a078312 = a006530 . a078310  -- Reinhard Zumkeller, Jul 23 2013

Crossrefs

Cf. A078311.

Sequence in context: A190283 A272414 A194367 * A004582 A074269 A198542

Adjacent sequences: A078309 A078310 A078311 * A078313 A078314 A078315

Keyword

nonn

Author

Reinhard Zumkeller, Nov 23 2002

Status

approved