A124298 Largest prime < 10*a(n-1), a(1)=13.

13, 127, 1259, 12589, 125887, 1258847, 12588461, 125884529, 1258845277, 12588452743, 125884527427, 1258845274261, 12588452742583, 125884527425827, 1258845274258259, 12588452742582559, 125884527425825569

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..200

Mathematica

NestList[NextPrime[10#, -1]&, 13, 30] (* Vincenzo Librandi, Jun 28 2014 *)

Crossrefs

Cf. A006902, A040016, A120031-A120041.

Sequence in context: A016169 A125401 A089763 * A201040 A201550 A361068

Adjacent sequences: A124295 A124296 A124297 * A124299 A124300 A124301

Keyword

nonn

Author

Artur Jasinski, Dec 16 2006

Status

approved