T(n,k) = Number of n X k nonnegative integer arrays with each row and column an ascent sequence (interior element no greater than one plus up-steps preceding it) and the lower right element equal to min(n,k)-1.
A202735
T(n,k) = Number of n X k nonnegative integer arrays with each row and column an ascent sequence (interior element no greater than one plus up-steps preceding it) and the lower right element equal to min(n,k)-1.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =2a(8) =2a(9) =1a(10) =1a(11) =4a(12) =2a(13) =4a(14) =1a(15) =1a(16) =8a(17) =14a(18) =14a(19) =8a(20) =1a(21) =1a(22) =16a(23) =78a(24) =12a(25) =78a(26) =16a(27) =1a(28) =1a(29) =32
External references
- oeis: A202735