Least number k such that phi(k) / Carmichael lambda(k) = 2n.

Terms

a(0) =8a(1) =24a(2) =63a(3) =80a(4) =275a(5) =252a(6) =1247a(7) =240a(8) =513a(9) =825a(10) =1541a(11) =455a(12) =4187a(13) =3277a(14) =1891a(15) =1040a(16) =14111a(17) =819a(18) =43739a(19) =2200a(20) =2107a(21) =4623a(22) =6533a(23) =1365a(24) =15251a(25) =8321a(26) =8829a(27) =6235a(28) =13747a(29) =2387