Sum of all numbers having n or fewer digits and having the sum of their digits equal to n.
A130835
Sum of all numbers having n or fewer digits and having the sum of their digits equal to n.
Terms
- a(0) =1a(1) =33a(2) =1110a(3) =38885a(4) =1399986a(5) =51333282a(6) =1906666476a(7) =71499999285
External references
- oeis: A130835