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Prime divisors of {n^2+n+1} which do not occur in A002383.
3

%I #9 Aug 16 2022 10:19:26

%S 19,37,61,67,79,97,103,109,127,139,151,163,181,193,199,223,229,271,

%T 277,283,313,331,337,349,367,373,379,397,409,433,439,457,487,499,523,

%U 541,547,571,577,607,613,619,631,643,661,673,691,709,727,733,739,751,769,787,811,823,829

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

%e 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.

%Y Cf. A002383.

%K nonn

%O 1,1

%A _Daniel Tisdale_, Jul 04 2009

%E More terms from _Michel Marcus_, Aug 16 2022