a(n) is the number of n-digit nonnegative integers with the median of the digits equal to one of the digits.
A378564
a(n) is the number of n-digit nonnegative integers with the median of the digits equal to one of the digits.
Terms
- a(0) =10a(1) =9a(2) =900a(3) =1665a(4) =90000a(5) =232710a(6) =9000000a(7) =29055165a(8) =900000000a(9) =3413319138a(10) =90000000000a(11) =386095933170
External references
- oeis: A378564