Smallest number which when Euler phi function is repeatedly applied have not reached a power of 2 in n steps.
A049117
Smallest number which when Euler phi function is repeatedly applied have not reached a power of 2 in n steps.
Terms
- a(0) =3a(1) =7a(2) =19a(3) =47a(4) =163a(5) =487a(6) =1307a(7) =2879a(8) =19683a(9) =39367a(10) =177147a(11) =531441a(12) =1594323a(13) =4782969a(14) =14348907a(15) =43046721a(16) =86093443a(17) =258280327a(18) =688747547a(19) =3486784401a(20) =10460353203
External references
- oeis: A049117