Smallest exponent m such that 2^m begins and ends with the same n digits, allowing any other digits in between.
A256526
Smallest exponent m such that 2^m begins and ends with the same n digits, allowing any other digits in between.
Terms
- a(0) =16a(1) =24a(2) =458a(3) =18341a(4) =16641a(5) =1116830a(6) =10971256a(7) =105969200a(8) =193295556a(9) =48221950695a(10) =72585186028
External references
- oeis: A256526