Variant of Carmichael's lambda function: a(p1^e1*...*pN^eN) = lcm((p1-1)*p1^(e1-1), ..., (pN-1)*pN^(eN-1)).

A011773

Variant of Carmichael's lambda function: a(p1^e1*...*pN^eN) = lcm((p1-1)*p1^(e1-1), ..., (pN-1)*pN^(eN-1)).

Terms

    a(0) =1a(1) =1a(2) =2a(3) =2a(4) =4a(5) =2a(6) =6a(7) =4a(8) =6a(9) =4a(10) =10a(11) =2a(12) =12a(13) =6a(14) =4a(15) =8a(16) =16a(17) =6a(18) =18a(19) =4a(20) =6a(21) =10a(22) =22a(23) =4a(24) =20a(25) =12a(26) =18a(27) =6a(28) =28a(29) =4

External references