a(n) is the least k such that 2^k begins with n!.
A374923
a(n) is the least k such that 2^k begins with n!.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =6a(4) =81a(5) =80a(6) =56a(7) =7284a(8) =33889a(9) =2044921a(10) =8151937a(11) =127668791a(12) =258943304a(13) =19207561921a(14) =189815680859
External references
- oeis: A374923