Numerator of Sum_{i = 1..n} (if(isprime(i), 0, 1/i)).

Terms

a(0) =1a(1) =1a(2) =1a(3) =5a(4) =5a(5) =17a(6) =17a(7) =37a(8) =119a(9) =631a(10) =631a(11) =661a(12) =661a(13) =4807a(14) =995a(15) =2053a(16) =2053a(17) =703a(18) =703a(19) =3599a(20) =3679a(21) =41309a(22) =41309a(23) =42079a(24) =214091a(25) =2829383a(26) =25864847a(27) =26250947a(28) =26250947a(29) =26611307