OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
EXAMPLE
For n=2, p=29; n=30, p=421; n=44, p=9857.
MATHEMATICA
Select[Range[0, 400], PrimeQ[5#^2+4#+1]&] (* Vincenzo Librandi, Sep 24 2012 *)
PROG
(Magma) [n: n in [0..450] | IsPrime(5*n^2+4*n+1)]; Vincenzo Librandi, Sep 24 2012
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Jan 20 2009
STATUS
approved