OFFSET
1,2
COMMENTS
Also numbers n such that (61*10^n-43)/9 is prime.
a(11) > 10^5. - Robert Price, Sep 12 2015
LINKS
FORMULA
a(n) = A101535(n-1) + 1 for n>1.
MATHEMATICA
Do[ If[ PrimeQ[(61*10^n - 43)/9], Print[n]], {n, 0, 10000}]
CROSSREFS
KEYWORD
more,nonn
AUTHOR
Robert G. Wilson v, Jan 18 2005
EXTENSIONS
a(8)-a(9) from Kamada data by Robert Price, Dec 14 2010
Inserted a(1)=0 by Robert Price, Sep 12 2015
a(10) from Robert Price, Sep 12 2015
STATUS
approved