Number of 7 X n 0..2 arrays with antidiagonals unimodal and rows and diagonals nondecreasing.

A224005

Number of 7 X n 0..2 arrays with antidiagonals unimodal and rows and diagonals nondecreasing.

Terms

    a(0) =2187a(1) =102069a(2) =739672a(3) =2743444a(4) =7400832a(5) =16795265a(6) =34534687a(7) =67029572a(8) =125640165a(9) =230434296a(10) =416688642a(11) =746070578a(12) =1325631005a(13) =2339607173a(14) =4101879980a(15) =7141164265a(16) =12337189420a(17) =21134985710a(18) =35876879602a(19) =60309132371a(20) =100343859256

External references