a(n)=3*(3^prime(n)-1)/denominator(B(2*prime(n))) where prime(n)=n-th prime and B(k) denotes the k-th Bernoulli number.

A090814

a(n)=3*(3^prime(n)-1)/denominator(B(2*prime(n))) where prime(n)=n-th prime and B(k) denotes the k-th Bernoulli number.

Terms

    a(0) =11a(1) =1093a(2) =3851a(3) =797161a(4) =64570081a(5) =581130733a(6) =1001523179a(7) =581613367499

External references