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A124298
Largest prime < 10*a(n-1), a(1)=13.
1
13, 127, 1259, 12589, 125887, 1258847, 12588461, 125884529, 1258845277, 12588452743, 125884527427, 1258845274261, 12588452742583, 125884527425827, 1258845274258259, 12588452742582559, 125884527425825569
OFFSET
1,1
LINKS
MATHEMATICA
NestList[NextPrime[10#, -1]&, 13, 30] (* Vincenzo Librandi, Jun 28 2014 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Artur Jasinski, Dec 16 2006
STATUS
approved