OFFSET
1,3
COMMENTS
Also numbers n such that (26*10^n-11)/3 is prime.
a(27) > 10^5. - Robert Price, Oct 25 2015
LINKS
FORMULA
a(n) = A101074(n-1) + 1, for n>1.
MATHEMATICA
Do[ If[ PrimeQ[(26*10^n - 11)/3], Print[n]], {n, 0, 10000}]
CROSSREFS
KEYWORD
more,nonn
AUTHOR
Robert G. Wilson v, Jan 19 2005
EXTENSIONS
a(21)-a(22) from Kamada data by Robert Price, Dec 14 2010
a(23)-a(26) from Erik Branger May 01 2013 by Ray Chandler, Aug 16 2013
Inserted a(1)=0 by Robert Price, Oct 25 2015
STATUS
approved