Numbers of the form 2^phi(m) + 1, where phi = A000010 = Euler totient function.
A281623
Numbers of the form 2^phi(m) + 1, where phi = A000010 = Euler totient function.
Terms
- a(0) =3a(1) =5a(2) =17a(3) =65a(4) =257a(5) =1025a(6) =4097a(7) =65537a(8) =262145a(9) =1048577a(10) =4194305a(11) =16777217a(12) =268435457a(13) =1073741825a(14) =4294967297a(15) =68719476737
External references
- oeis: A281623