Integer part of the arithmetic mean of all the distinct numbers formed by permuting the digits of concatenation of numbers from 1 to n.
A078266
Integer part of the arithmetic mean of all the distinct numbers formed by permuting the digits of concatenation of numbers from 1 to n.
Terms
- a(0) =1a(1) =16a(2) =222a(3) =2777a(4) =33333a(5) =388888a(6) =4444444a(7) =49999999a(8) =555555555a(9) =46464646464
External references
- oeis: A078266