a(n) is the largest number m satisfying lambda(m)=n, or zero if there is no solution, where lambda(m) is Carmichael's lambda function A002322(m).

A270562

a(n) is the largest number m satisfying lambda(m)=n, or zero if there is no solution, where lambda(m) is Carmichael's lambda function A002322(m).

Terms

    a(0) =2a(1) =24a(2) =0a(3) =240a(4) =0a(5) =504a(6) =0a(7) =480a(8) =0a(9) =264a(10) =0a(11) =65520a(12) =0a(13) =0a(14) =0a(15) =16320a(16) =0a(17) =28728a(18) =0a(19) =13200a(20) =0a(21) =552a(22) =0a(23) =131040a(24) =0a(25) =0a(26) =0a(27) =6960a(28) =0a(29) =171864

External references