The Euler totient of the smallest cube divisible by n.

Terms

a(0) =1a(1) =4a(2) =18a(3) =4a(4) =100a(5) =72a(6) =294a(7) =4a(8) =18a(9) =400a(10) =1210a(11) =72a(12) =2028a(13) =1176a(14) =1800a(15) =32a(16) =4624a(17) =72a(18) =6498a(19) =400a(20) =5292a(21) =4840a(22) =11638a(23) =72a(24) =100a(25) =8112a(26) =18a(27) =1176a(28) =23548a(29) =7200