Array read by antidiagonals: T(n,k) is the number of n X k nonnegative integer matrices with all column sums n and row sums k.

A333901

Array read by antidiagonals: T(n,k) is the number of n X k nonnegative integer matrices with all column sums n and row sums k.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =1a(10) =1a(11) =1a(12) =3a(13) =1a(14) =1a(15) =1a(16) =1a(17) =7a(18) =7a(19) =1a(20) =1a(21) =1a(22) =1a(23) =19a(24) =55a(25) =19a(26) =1a(27) =1a(28) =1a(29) =1

External references