Numbers k such that the k-th semiprime == 10 (mod k).

Terms

a(0) =1a(1) =2a(2) =4a(3) =12a(4) =14a(5) =64a(6) =79a(7) =81a(8) =83a(9) =84a(10) =85a(11) =6879a(12) =6901a(13) =613419a(14) =613445a(15) =613571a(16) =613605a(17) =58155568a(18) =6384425499a(19) =6384425501a(20) =6384425551a(21) =6384425553a(22) =6384425635a(23) =819217006167a(24) =819217006202a(25) =819217006763a(26) =819217006854a(27) =819217006872