Number of odd digits necessary to write all nonnegative n-digit integers.
A359271
Number of odd digits necessary to write all nonnegative n-digit integers.
Terms
- a(0) =5a(1) =95a(2) =1400a(3) =18500a(4) =230000a(5) =2750000a(6) =32000000a(7) =365000000a(8) =4100000000a(9) =45500000000a(10) =500000000000
External references
- oeis: A359271