OFFSET
1,2
COMMENTS
Also numbers k such that (34*10^k-61)/9 is prime.
a(15) > 8*10^5. - Jason H Parker, Sep 30 2021
LINKS
FORMULA
a(n) = A101841(n) + 1.
MATHEMATICA
Do[ If[ PrimeQ[(34*10^k-61)/9], Print[k]], {k, 1, 10000}]
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Robert G. Wilson v, Dec 17 2004
EXTENSIONS
Addition of a(10)-a(11) from Kamada data by Robert Price, Dec 13 2010
a(12) from Erik Branger May 01 2013 by Ray Chandler, Aug 16 2013
a(13) from Jason H Parker, Jun 14 2019
0 removed by Georg Fischer, Jan 03 2021
a(14) from Jason H Parker, Sep 30 2021
STATUS
approved