When the Euler phi function is iterated with initial value primorial(n) = A002110(n), a(n)= first (maximum) power of 2 emerging during iteration.
A053098
When the Euler phi function is iterated with initial value primorial(n) = A002110(n), a(n)= first (maximum) power of 2 emerging during iteration.
Terms
- a(0) =2a(1) =2a(2) =8a(3) =16a(4) =128a(5) =512a(6) =8192a(7) =16384a(8) =262144a(9) =2097152a(10) =16777216a(11) =67108864a(12) =2147483648a(13) =8589934592a(14) =274877906944
External references
- oeis: A053098