1,1

a(5) > 4.3x10^8

a(2) = 113: y = x^2+17x+113.

If x = 0; y = 0+0+113 = 113, which is prime.

If x = 1; y = 1+17+113 = 131, which is prime.

If x = 2; y = 4+34+113 = 151, which is prime.

If x = 3; y = 9+51+113 = 173, which is prime.

If x = 4; y = 16+68+113 = 197, which is prime.

If x = 5; y = 25+85+113 = 223, which is prime.

If x = 6; y = 36+102+113 = 251, which is prime.

If x = 7; y = 49+119+113 = 281, which is prime.

If x = 8; y = 64+136+113 = 313, which is prime.

If x = 9; y = 81+153+113 = 347, which is prime.

Sequence in context: A093359 A158556 A050527 this_sequence A042646 A042648 A042650

Adjacent sequences: A097458 A097459 A097460 this_sequence A097462 A097463 A097464

nonn

Ray G. Opao (1260(AT)email.com), Aug 23 2004

More terms from Ryan Propper (rpropper(AT)stanford.edu), Sep 07 2005