Composite numbers n such that gcd(phi(n), n-1) = lambda(n), where lambda(n) = A002322(n).

Terms

a(0) =561a(1) =1105a(2) =2821a(3) =6601a(4) =10585a(5) =29341a(6) =52633a(7) =62745a(8) =63973a(9) =101101a(10) =115921a(11) =126217a(12) =188461a(13) =252601a(14) =278545a(15) =294409a(16) =410041a(17) =512461a(18) =552721a(19) =748657a(20) =825265a(21) =1152271a(22) =1193221a(23) =2100901a(24) =2508013a(25) =2531845a(26) =3146221a(27) =4335241a(28) =4767841a(29) =4909177