OFFSET
1,1
COMMENTS
11 and 97 are the smallest and largest of two-digit primes.
LINKS
Daniel Starodubtsev, Table of n, a(n) for n = 1..10000
EXAMPLE
If k=9, then 11*k - 97 = 2 (prime).
If k=48, then 11*k - 97 = 431 (prime).
MATHEMATICA
Select[Range[9, 350], PrimeQ[(11*# - 97)] &] (* Martin Ettl, Oct 21 2012 *)
PROG
(Magma) [n: n in [9..1000] | IsPrime(11*n - 97)] // Vincenzo Librandi, Nov 13 2010
(PARI) is(n)=isprime(11*n-97) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Parthasarathy Nambi, May 13 2005
STATUS
approved