OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..5000
MATHEMATICA
Select[Range[100], !PrimeQ[Prime[#]^2 - 2 #] &]
PROG
(Magma) [n: n in [1..100] | not IsPrime(NthPrime(n)^2-2*n)];
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Apr 15 2014
STATUS
approved