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 and at least one of digits 5,6,7,8,9.
A125945
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 and at least one of digits 5,6,7,8,9.
Terms
- a(0) =10a(1) =96a(2) =892a(3) =8076a(4) =71500a(5) =619236a(6) =5241652a(7) =43355436a(8) =350740540a(9) =2780210676a(10) =21641505412a(11) =165814383996
External references
- oeis: A125945