A201712 Primes of the form 2n^2 - 3.

5, 29, 47, 197, 239, 389, 509, 719, 797, 2309, 2447, 3359, 4229, 4799, 6047, 6269, 6959, 8447, 10079, 10949, 11549, 12479, 14447, 17669, 18047, 19997, 20399, 22469, 24197, 28319, 31247, 33797, 34319, 38639, 45599, 51197, 51839, 55109

Offset: 1

Author

Vincenzo Librandi, Dec 04 2011

Keywords

• nonn
• easy

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..5000

Programs

Magma

[a: n in [1..300] | IsPrime(a) where a is 2*n^2-3];

Mathematica

 Select[Table[2n^2-3,{n,1,1000}],PrimeQ]