A(n,k) = Sum_{i_1=0..n} Sum_{i_2=0..n} ... Sum_{i_k=0..n} multinomial(i_1 + i_2 + ... + i_k; i_1, i_2, ..., i_k), square array A(n,k) read by antidiagonals, for n >= 0, k >= 0.
A308292
A(n,k) = Sum_{i_1=0..n} Sum_{i_2=0..n} ... Sum_{i_k=0..n} multinomial(i_1 + i_2 + ... + i_k; i_1, i_2, ..., i_k), square array A(n,k) read by antidiagonals, for n >= 0, k >= 0.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =5a(8) =3a(9) =1a(10) =1a(11) =16a(12) =19a(13) =4a(14) =1a(15) =1a(16) =65a(17) =271a(18) =69a(19) =5a(20) =1a(21) =1a(22) =326a(23) =7365a(24) =5248a(25) =251a(26) =6a(27) =1a(28) =1a(29) =1957
External references
- oeis: A308292