T(n,k) = number of n X k nonnegative integer arrays with new values 0 upwards introduced in row major order and every value unique in its row and column.
A211709
T(n,k) = number of n X k nonnegative integer arrays with new values 0 upwards introduced in row major order and every value unique in its row and column.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =4a(5) =1a(6) =1a(7) =18a(8) =18a(9) =1a(10) =1a(11) =108a(12) =588a(13) =108a(14) =1a(15) =1a(16) =780a(17) =30240a(18) =30240a(19) =780a(20) =1a(21) =1a(22) =6600a(23) =2277600a(24) =17427192a(25) =2277600a(26) =6600a(27) =1a(28) =1a(29) =63840
External references
- oeis: A211709