OFFSET
1,1
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
EXAMPLE
If n=4, then 11*n - 1 = 43 (prime).
If n=42, then 11*n - 1 = 461 (prime).
MATHEMATICA
Select[Range[400], PrimeQ[11#-1]&] (* Harvey P. Dale, Jul 18 2022 *)
PROG
(Magma) [n: n in [0..100000] | IsPrime(11*n - 1)] // Vincenzo Librandi, Nov 13 2010
(PARI) is(n)=isprime(11*n-1) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Parthasarathy Nambi, Jun 14 2005
STATUS
approved