A126607 a(1) = 2, a(2) = 3; for n>2, a(n) = least prime such that a(n-2) is the largest prime factor of a(n)+a(n-1).

2, 3, 5, 7, 3, 11, 7, 37, 5, 439, 11, 7013, 379, 27673, 373, 54973, 977, 548753, 4229, 7678313, 10009, 230339381, 27763, 5067438619, 197297, 273641488129, 375209, 14229357007499, 5322971, 369963276872003, 60154183, 64373610115574339

Offset

1,1

Links

Peter Pein, Table of n, a(n) for n = 1..50

Crossrefs

Sequence in context: A126050 A163821 A156294 * A124322 A209037 A334455

Adjacent sequences: A126604 A126605 A126606 * A126608 A126609 A126610

Keyword

nonn

Author

Zak Seidov, Jan 07 2007

Extensions

More terms from Peter Pein, Jan 08 2007

Status

approved