a(n) = decimal expansion of (n-1) prepended n times to the decimal expansion of n (n > 0).

A267327

a(n) = decimal expansion of (n-1) prepended n times to the decimal expansion of n (n > 0).

Terms

    a(0) =1a(1) =112a(2) =2223a(3) =33334a(4) =444445a(5) =5555556a(6) =66666667a(7) =777777778a(8) =8888888889a(9) =999999999910

External references