1,1

Found by David Broadhurst in 2002. Note that zeta(-1)=-1/12. Hence zeta(1-2p) has denominator 12 and prime numerator.

Cf. A112548 (n such that the numerator of zeta(1-n) is prime).

Sequence in context: A059500 A104213 A105896 this_sequence A111380 A109775 A108560

Adjacent sequences: A112738 A112739 A112740 this_sequence A112742 A112743 A112744

hard,nonn

T. D. Noe (noe(AT)sspectra.com), Sep 28 2005