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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
OFFSET
1,1
LINKS
MATHEMATICA
NestList[NextPrime[10 #, -1]&, 31, 30] (* Vincenzo Librandi, Jun 28 2014 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Artur Jasinski, Dec 16 2006
STATUS
approved