a(n) is the number of nonnegative integers k less than 10^n such that the decimal representation of k lacks at least one of digits 1,2, at least one of digits 3,4,5 and at least one of digits 6,7,8,9.
A125946
a(n) is the number of nonnegative integers k less than 10^n such that the decimal representation of k lacks at least one of digits 1,2, at least one of digits 3,4,5 and at least one of digits 6,7,8,9.
Terms
- a(0) =10a(1) =98a(2) =940a(3) =8798a(4) =80140a(5) =709238a(6) =6096100a(7) =50950718a(8) =415060060a(9) =3305238278a(10) =25807024660a(11) =198131841038
External references
- oeis: A125946