Concatenation of numbers from n down to 1.
A000422
Concatenation of numbers from n down to 1.
Terms
- a(0) =1a(1) =21a(2) =321a(3) =4321a(4) =54321a(5) =654321a(6) =7654321a(7) =87654321a(8) =987654321a(9) =10987654321
External references
- oeis: A000422