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

1,1

Links

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

Mathematica

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

Prog

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

Crossrefs

Sequence in context: A142356 A142557 A164290 * A289390 A118574 A142854

Adjacent sequences: A201784 A201785 A201786 * A201788 A201789 A201790

Keyword

nonn,easy

Author

Vincenzo Librandi, Dec 05 2011

Status

approved