Number of nonzero digits needed to write all nonnegative n-digit integers.
A358620
Number of nonzero digits needed to write all nonnegative n-digit integers.
Terms
- a(0) =9a(1) =171a(2) =2520a(3) =33300a(4) =414000a(5) =4950000a(6) =57600000a(7) =657000000a(8) =7380000000a(9) =81900000000a(10) =900000000000
External references
- oeis: A358620