OFFSET
1,2
COMMENTS
Also numbers n such that (28*10^n+71)/9 is prime.
LINKS
FORMULA
a(n) = A101827(n-1) + 1.
MATHEMATICA
Do[ If[ PrimeQ[(28*10^n+71)/9], Print[n]], {n, 0, 10000}]
CROSSREFS
KEYWORD
more,nonn
AUTHOR
Robert G. Wilson v, Dec 17 2004
EXTENSIONS
Two more PRP terms from Serge Batalov, Nov 17 2008
Addition of a(8) from Kamada data by Robert Price, Dec 13 2010
STATUS
approved