Numerator of Pi^(2n)/(Gamma(2n)*(1-2^(-2n))*Zeta(2n)); = 8*(highest power of 2 dividing n).

Terms

a(0) =8a(1) =16a(2) =8a(3) =32a(4) =8a(5) =16a(6) =8a(7) =64a(8) =8a(9) =16a(10) =8a(11) =32a(12) =8a(13) =16a(14) =8a(15) =128a(16) =8a(17) =16a(18) =8a(19) =32a(20) =8a(21) =16a(22) =8a(23) =64a(24) =8a(25) =16a(26) =8a(27) =32a(28) =8a(29) =16