OFFSET
1,3
COMMENTS
Also numbers n such that (17*10^n-11)/3 is prime.
a(27) > 10^5. - Robert Price, Jul 29 2015
LINKS
FORMULA
a(n) = A101582(n-1) + 1 for n>1.
MATHEMATICA
Do[ If[ PrimeQ[(17*10^n - 11)/3], Print[n]], {n, 0, 10000}]
CROSSREFS
KEYWORD
more,nonn
AUTHOR
Robert G. Wilson v, Jan 18 2005
EXTENSIONS
a(18)-a(19) from Kamada data by Robert Price, Dec 14 2010
a(20)-a(21) from Erik Branger May 01 2013 by Ray Chandler, Aug 16 2013
Prepended a(1)=0 by Robert Price, Jul 29 2015
a(22)-a(26) from Robert Price, Jul 29 2015
STATUS
approved