Numbers k such that numerator of Sum_{i=1..k} 1/(prime(i)-1) is prime.

Terms

a(0) =2a(1) =3a(2) =4a(3) =7a(4) =8a(5) =15a(6) =19a(7) =21a(8) =22a(9) =25a(10) =26a(11) =31a(12) =34a(13) =45a(14) =46a(15) =52a(16) =65a(17) =69a(18) =79a(19) =85a(20) =89a(21) =98a(22) =102a(23) =122a(24) =137a(25) =149a(26) =181a(27) =195a(28) =210a(29) =220