Square array A(n,k), n>=0, k>=0, read by antidiagonals: A(n,k) is the number of k-element subsets that can be chosen from {1,2,...,k*n} having element sum k*(k*n+1)/2.

A204459

Square array A(n,k), n>=0, k>=0, read by antidiagonals: A(n,k) is the number of k-element subsets that can be chosen from {1,2,...,k*n} having element sum k*(k*n+1)/2.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =1a(6) =0a(7) =1a(8) =0a(9) =1a(10) =0a(11) =1a(12) =2a(13) =1a(14) =1a(15) =0a(16) =1a(17) =0a(18) =3a(19) =0a(20) =1a(21) =0a(22) =1a(23) =8a(24) =8a(25) =4a(26) =1a(27) =1a(28) =0a(29) =1

External references