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 the digits 1,2,3 and at least one of the digits 4,5,6,7,8,9.
A125897
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 the digits 1,2,3 and at least one of the digits 4,5,6,7,8,9.
Terms
- a(0) =10a(1) =100a(2) =994a(3) =9796a(4) =95650a(5) =924820a(6) =8845714a(7) =83575396a(8) =778945090a(9) =7156197940a(10) =64800104434a(11) =578648865796
External references
- oeis: A125897