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A124299
Largest prime < 10*a[n-1], a[1]=17.
1
17, 167, 1669, 16673, 166723, 1667227, 16672267, 166722667, 1667226667, 16672266659, 166722666527, 1667226665213, 16672266652081, 166722666520801, 1667226665207989, 16672266652079879, 166722666520798747
OFFSET
1,1
LINKS
MATHEMATICA
NestList[NextPrime[10#, -1]&, 17, 20] (* Harvey P. Dale, Sep 05 2013 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Artur Jasinski, Dec 16 2006
STATUS
approved