a(n) is the smallest k such that tau(k*2^n - 1) is equal to 2^n where tau = A000005.
A377634
a(n) is the smallest k such that tau(k*2^n - 1) is equal to 2^n where tau = A000005.
Terms
- a(0) =2a(1) =4a(2) =17a(3) =130a(4) =1283a(5) =6889a(6) =40037a(7) =638521a(8) =10126943a(9) =186814849a(10) =2092495862
External references
- oeis: A377634