A162471 Prime divisors of {n^2+n+1} which do not occur in A002383.

19, 37, 61, 67, 79, 97, 103, 109, 127, 139, 151, 163, 181, 193, 199, 223, 229, 271, 277, 283, 313, 331, 337, 349, 367, 373, 379, 397, 409, 433, 439, 457, 487, 499, 523, 541, 547, 571, 577, 607, 613, 619, 631, 643, 661, 673, 691, 709, 727, 733, 739, 751, 769, 787, 811, 823, 829

Offset: 1

Author

Daniel Tisdale, Jul 04 2009

Keywords

• nonn

Examples

			The first prime divisor of {n^2+n+1} which is not an element of the sequence A002383 is 19. 7^2+7+1 = 57 = 19*3.
		

Crossrefs

Cf. A002383.

Extensions

More terms from Michel Marcus, Aug 16 2022