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%N Primes p such that zeta(1-2p)/zeta(-1) is prime.
%C Found by David Broadhurst in 2002. Note that zeta(-1)=-1/12. Hence zeta(1-2p) has denominator 12 and prime numerator.
%Y Cf. A112548 (n such that the numerator of zeta(1-n) is prime).
%A _T. D. Noe_, Sep 28 2005