Values of i such that phi(x) = 4i+2 has 4 solutions.

Terms

a(0) =1a(1) =4a(2) =10a(3) =40a(4) =121a(5) =364a(6) =1105a(7) =1540a(8) =3601a(9) =4795a(10) =5662a(11) =6601a(12) =9841a(13) =19414a(14) =35815a(15) =103201a(16) =131950a(17) =141224a(18) =210910a(19) =245272a(20) =378532a(21) =505876a(22) =613480a(23) =762565a(24) =986545a(25) =1010527a(26) =1147576a(27) =1252720a(28) =1732847a(29) =1750990