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Table of n, a(n) for n=0..17.
(PARI) a(n)=(-1)^(n+1)*bernfrac(2*n)*prod(p=1, 2*n+1, if(isprime(p), p, 1))
Sequence in context: A158969 A083842 A164372 * A057177 A211769 A229030
Adjacent sequences: A123533 A123534 A123535 * A123537 A123538 A123539
Benoit Cloitre, Nov 11 2006