Number of zeros in numbers 1 to 111...1 (n+1 digits).

A014925

Number of zeros in numbers 1 to 111...1 (n+1 digits).

Terms

    a(0) =1a(1) =21a(2) =321a(3) =4321a(4) =54321a(5) =654321a(6) =7654321a(7) =87654321a(8) =987654321a(9) =10987654321a(10) =120987654321

External references