A153424 Primes of the form n^2+3n+223

223, 227, 233, 241, 251, 263, 277, 293, 311, 331, 353, 431, 461, 563, 601, 641, 683, 727, 773, 821, 977, 1033, 1091, 1151, 1213, 1277, 1481, 1553, 1627, 1861, 2027, 2113, 2383, 2477, 2671, 3083, 3191, 3301, 3413, 3527, 3643, 3761, 3881, 4003, 4127, 4253

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Mathematica

Table[n^2+3*n+223, {n, 0, 70}], PrimeQ] (* Vincenzo Librandi, Jul 14 2012

Prog

(Magma) [a: n in [0..50] | IsPrime(a) where a is n^2+3*n+223 ]; // Vincenzo Librandi, Jul 14 2012

Crossrefs

Cf. A153423.

Sequence in context: A178551 A105982 A243766 * A100607 A092623 A220474

Adjacent sequences: A153421 A153422 A153423 * A153425 A153426 A153427

Keyword

nonn,easy

Author

Vincenzo Librandi, Dec 26 2008

Status

approved