a(n) is the smallest nonnegative integer such that a(n)! contains a string of exactly n consecutive 2's.
A254447
a(n) is the smallest nonnegative integer such that a(n)! contains a string of exactly n consecutive 2's.
Terms
- a(0) =0a(1) =2a(2) =13a(3) =31a(4) =45a(5) =200a(6) =854a(7) =3358a(8) =4698a(9) =29324a(10) =55295a(11) =263489a(12) =567993a(13) =2328803
External references
- oeis: A254447