Numbers n such that phi(n) = b(n,1)^b(n,0) where b(n,1) is the number of 1's in binary representation of n and b(n,0) the number of 0's.
A071638
Numbers n such that phi(n) = b(n,1)^b(n,0) where b(n,1) is the number of 1's in binary representation of n and b(n,0) the number of 0's.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =10a(4) =12a(5) =20a(6) =24a(7) =34a(8) =40a(9) =48a(10) =60a(11) =68a(12) =80a(13) =85a(14) =96a(15) =136a(16) =160a(17) =192a(18) =272a(19) =320a(20) =384a(21) =399a(22) =514a(23) =544a(24) =640a(25) =768a(26) =1028a(27) =1088a(28) =1280a(29) =1536
External references
- oeis: A071638