T(n,k) = number of n X k arrays with rows being permutations of 0..k-1 and no column j greater than column j-1 in all rows (n, k >= 1).
A212855
T(n,k) = number of n X k arrays with rows being permutations of 0..k-1 and no column j greater than column j-1 in all rows (n, k >= 1).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =1a(7) =19a(8) =7a(9) =1a(10) =1a(11) =211a(12) =163a(13) =15a(14) =1a(15) =1a(16) =3651a(17) =8983a(18) =1135a(19) =31a(20) =1a(21) =1a(22) =90921a(23) =966751a(24) =271375a(25) =7291a(26) =63a(27) =1a(28) =1a(29) =3081513
External references
- oeis: A212855