Number of n-element subsets that can be chosen from {1,2,...,9*n} having element sum n*(9*n+1)/2.
A204465
Number of n-element subsets that can be chosen from {1,2,...,9*n} having element sum n*(9*n+1)/2.
Terms
- a(0) =1a(1) =1a(2) =9a(3) =85a(4) =1143a(5) =17053a(6) =276373a(7) =4721127a(8) =83916031a(9) =1537408202a(10) =28851490163a(11) =552095787772
External references
- oeis: A204465