A124335 Largest prime < 10*a(n-1), a(1)=31.

31, 307, 3067, 30661, 306589, 3065863, 30658619, 306586169, 3065861681, 30658616789, 306586167863, 3065861678629, 30658616786249, 306586167862427, 3065861678624219, 30658616786242157, 306586167862421549, 3065861678624215469, 30658616786242154603, 306586167862421546017

Offset

1,1

Links

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

Mathematica

NestList[NextPrime[10 #, -1]&, 31, 30] (* Vincenzo Librandi, Jun 28 2014 *)

Crossrefs

Cf. A124262.

Sequence in context: A147297 A295975 A002225 * A368953 A368946 A042870

Adjacent sequences: A124332 A124333 A124334 * A124336 A124337 A124338

Keyword

nonn,changed

Author

Artur Jasinski, Dec 16 2006

Status

approved