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A065317 Largest prime divisor of n-th primorial + (n+1)-st prime. 4


%S 5,11,37,17,101,30047,510529,9699713,1427,76829,789077,659863,

%T 810104837,13082761331670077,652833094897,32589158477190044789,

%U 1922760350154212639131,28406001782370300553,770555057

%N Largest prime divisor of n-th primorial + (n+1)-st prime.

%H R. Mestrovic, <a href="http://arxiv.org/abs/1202.3670">Euclid's theorem on the infinitude of primes: a historical survey of its proofs (300 BC--2012) and another new proof</a>, arXiv preprint arXiv:1202.3670, 2012 - From N. J. A. Sloane, Jun 13 2012

%F a(n)=A006530[A002110(n)+A000040(n+1)]

%e n=3,3rd primorial=30,p(4)=7, sum=37, a(3)=37.

%Y A002110, A000040, A006530, A006530, A057713, A002584, A002585, A051342 A065314-A065317.

%K nonn

%O 1,1

%A _Labos Elemer_, Oct 29 2001

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Last modified June 17 15:28 EDT 2019. Contains 324194 sequences. (Running on oeis4.)