Numerator of sum_{p prime, p-1 divides 2*n} 1/p.

Terms

a(0) =5a(1) =31a(2) =41a(3) =31a(4) =61a(5) =3421a(6) =5a(7) =557a(8) =821a(9) =371a(10) =121a(11) =3421a(12) =5a(13) =929a(14) =15745a(15) =557a(16) =5a(17) =2557843a(18) =5a(19) =15541a(20) =1805a(21) =743a(22) =241a(23) =60887a(24) =61a(25) =1673a(26) =821a(27) =929a(28) =301a(29) =79085411