OFFSET
1,3
COMMENTS
Also numbers n such that (52*10^n+11)/9 is prime.
a(15) > 10^5. - Robert Price, Sep 05 2015
LINKS
FORMULA
a(n) = A101586(n-1) + 1, for n>1.
EXAMPLE
For n=0, (52*10^n+11)/9=7 which is prime, so 0 is in the sequence.
MATHEMATICA
Do[ If[ PrimeQ[(52*10^n + 11)/9], Print[n]], {n, 0, 10000}]
CROSSREFS
KEYWORD
more,nonn
AUTHOR
Robert G. Wilson v, Jan 18 2005
EXTENSIONS
Addition of a(13) from Kamada data by Robert Price, Dec 13 2010
Inserted a(1)=0 by Robert Price, Sep 05 2015
STATUS
approved