OFFSET
1,1
COMMENTS
The associated primes p are in A165349.
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
EXAMPLE
MATHEMATICA
Select[Table[(p^2 - 1)/4 - p, {p, Prime[Range[200]]}], PrimeQ] (* Vincenzo Librandi, Oct 12 2012 *)
PROG
(Magma) [a: p in PrimesInInterval(5, 700) | IsPrime(a) where a is (p^2 - 1) div 4 - p ]; // Vincenzo Librandi, Oct 12 2012
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Sep 22 2009
EXTENSIONS
Entries checked by R. J. Mathar, Sep 26 2009
STATUS
approved