Largest number k such that the reduced totient function psi(k) = A002174(n).

Terms

a(0) =2a(1) =24a(2) =240a(3) =504a(4) =480a(5) =264a(6) =65520a(7) =16320a(8) =28728a(9) =13200a(10) =552a(11) =131040a(12) =6960a(13) =171864a(14) =32640a(15) =138181680a(16) =1082400a(17) =151704a(18) =5520a(19) =1128a(20) =4455360a(21) =12720a(22) =86184a(23) =13920a(24) =1416a(25) =6814407600a(26) =65280a(27) =776664a(28) =18744a(29) =20174525280