OFFSET
1,3
COMMENTS
Also numbers n such that (22*10^n+17)/3 is prime.
a(15) > 10^5. - Robert Price, Sep 26 2015
LINKS
FORMULA
a(n) = A101138(n-1) + 1 for n>1.
EXAMPLE
For n=0, (22*10^n+17)/3 = 13 which is a prime so 0 is a term.
MATHEMATICA
Do[ If[ PrimeQ[(22*10^n + 17)/3], Print[n]], {n, 0, 10000}]
CROSSREFS
KEYWORD
more,nonn
AUTHOR
Robert G. Wilson v, Jan 19 2005
EXTENSIONS
a(13) from Kamada data by Robert Price, Dec 14 2010
Inserted a(1) = 0 by Robert Price, Sep 26 2015
a(14) from Robert Price, Sep 26 2015
STATUS
approved