Numerator of the sum of the reciprocals of the first n nonprimes.

Terms

a(0) =1a(1) =5a(2) =17a(3) =37a(4) =119a(5) =631a(6) =661a(7) =4807a(8) =995a(9) =2053a(10) =703a(11) =3599a(12) =3679a(13) =41309a(14) =42079a(15) =214091a(16) =2829383a(17) =25864847a(18) =26250947a(19) =26611307a(20) =53898289a(21) =54553489a(22) =938220113a(23) =135531719a(24) =136990319a(25) =2629070861a(26) =2654652461a(27) =2679594521a(28) =18923442047a(29) =19082164247