Numbers k such that the k-th semiprime == 3 (mod k).

Terms

a(0) =1a(1) =3a(2) =6a(3) =36a(4) =46a(5) =78a(6) =6915a(7) =6916a(8) =613375a(9) =613378a(10) =613404a(11) =613406a(12) =613414a(13) =613438a(14) =613448a(15) =613454a(16) =613456a(17) =613508a(18) =613519a(19) =613522a(20) =613532a(21) =613559a(22) =613568a(23) =613570a(24) =613582a(25) =613586a(26) =613598a(27) =58155528a(28) =58155536a(29) =58155549