Number of 2*n-element subsets that can be chosen from {1,2,...,20*n} having element sum n*(20*n+1).
A204466
Number of 2*n-element subsets that can be chosen from {1,2,...,20*n} having element sum n*(20*n+1).
Terms
- a(0) =1a(1) =10a(2) =1588a(3) =479632a(4) =181913856a(5) =78132541528
External references
- oeis: A204466