Euler's totient of A104365(n) = A104350(n) + 1.

Terms

a(0) =1a(1) =2a(2) =6a(3) =12a(4) =60a(5) =180a(6) =1152a(7) =2520a(8) =7560a(9) =37332a(10) =415800a(11) =1247400a(12) =16118932a(13) =112918900a(14) =564876900a(15) =1109481408a(16) =17645365584a(17) =57890359152