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A124335 Largest prime < 10*a(n-1), a(1)=31. 1
31, 307, 3067, 30661, 306589, 3065863, 30658619, 306586169, 3065861681, 30658616789, 306586167863, 3065861678629, 30658616786249, 306586167862427, 3065861678624219, 30658616786242157, 306586167862421549 (list; graph; refs; listen; history; text; internal format)
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. A006902, A040016, A120031-A120041.

Sequence in context: A147297 A295975 A002225 * A042870 A152033 A125394

Adjacent sequences:  A124332 A124333 A124334 * A124336 A124337 A124338

KEYWORD

nonn

AUTHOR

Artur Jasinski, Dec 16 2006

STATUS

approved

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Last modified March 19 11:08 EDT 2019. Contains 321329 sequences. (Running on oeis4.)