OFFSET
1,1
COMMENTS
Also numbers n such that (53*10^n-71)/9 is prime.
a(15) > 10^5. - Robert Price, Sep 08 2015
LINKS
FORMULA
a(n) = A101587(n) + 1.
MATHEMATICA
Do[ If[ PrimeQ[(53*10^n - 71)/9], Print[n]], {n, 0, 10000}]
CROSSREFS
KEYWORD
more,nonn
AUTHOR
Robert G. Wilson v, Jan 18 2005
EXTENSIONS
Addition of a(11)-a(13) from Kamada data by Robert Price, Dec 13 2010
a(14) from Robert Price, Sep 08 2015
STATUS
approved