T(n,k)=Number of nXk 0..3 arrays with rows, antidiagonals and columns unimodal.

Terms

a(0) =4a(1) =16a(2) =16a(3) =50a(4) =256a(5) =50a(6) =130a(7) =2500a(8) =2500a(9) =130a(10) =296a(11) =16900a(12) =61733a(13) =16900a(14) =296a(15) =610a(16) =87616a(17) =916107a(18) =916107a(19) =87616a(20) =610a(21) =1163a(22) =372100a(23) =9478535a(24) =26631193a(25) =9478535a(26) =372100a(27) =1163a(28) =2083a(29) =1352569