A201787 Primes of the form 5n^2 - 6.

239, 599, 839, 1439, 3119, 4799, 9239, 34439, 41399, 45119, 59399, 63839, 123239, 139439, 142799, 186239, 206039, 235439, 244199, 248639, 257639, 285599, 290399, 300119, 320039, 361799, 465119, 508799, 588239, 602039, 608999, 666119

Offset: 1

Author

Vincenzo Librandi, Dec 05 2011

Keywords

• nonn
• easy

Links

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

Programs

Magma

[a: n in [1..400] | IsPrime(a) where a is 5*n^2-6];

Mathematica

Select[Table[5n^2-6,{n,1,1000}],PrimeQ]