A102649 Numbers n such that 11*n^2 + 11*n + 3 is prime.

0, 4, 7, 10, 22, 34, 40, 49, 52, 64, 67, 70, 82, 100, 109, 115, 124, 127, 139, 169, 172, 175, 184, 187, 202, 214, 217, 235, 244, 265, 277, 280, 289, 292, 295, 307, 310, 325, 349, 367, 424, 454, 460, 484, 487, 490, 505, 517, 529, 535, 547, 559, 565, 589, 604

Offset

1,2

Comments

Except for 0, all a(n)==1 (mod 3). - Robert G. Wilson v, Feb 12 2005

Links

Table of n, a(n) for n=1..55.

Example

If n=0, then 11*(0^2) + 11*0 + 3 = 3 (prime)
If n=64, then 11*(64^2) + 11*64 + 3 = 45763 (prime)
If n=169, then 11*(169^2) + 11*169 + 3 = 316033 (prime)

Prog

(PARI) is(n)=isprime(11*n^2+11*n+3) \\ Charles R Greathouse IV, Jun 13 2017

Crossrefs

Sequence in context: A080922 A227686 A161863 * A084386 A275176 A024726

Adjacent sequences: A102646 A102647 A102648 * A102650 A102651 A102652

Keyword

nonn,easy

Author

Parthasarathy Nambi, Feb 03 2005

Extensions

More terms from Robert G. Wilson v, Feb 12 2005

Status

approved