Primes of the form sum 6d/(2 + mu(d)) for some k and all d dividing k.

Terms

a(0) =2a(1) =47a(2) =107a(3) =191a(4) =281a(5) =431a(6) =587a(7) =593a(8) =661a(9) =971a(10) =1097a(11) =1213a(12) =1217a(13) =2357a(14) =2549a(15) =2699a(16) =5807a(17) =5869a(18) =6469a(19) =6911a(20) =7039a(21) =7873a(22) =8423a(23) =8747a(24) =10799a(25) =11261a(26) =11821a(27) =11981a(28) =14867a(29) =15551