Number of nX3 0..2 arrays with rows, columns, diagonals and antidiagonals unimodal.

A223737

Number of nX3 0..2 arrays with rows, columns, diagonals and antidiagonals unimodal.

Terms

    a(0) =22a(1) =484a(2) =5600a(3) =42090a(4) =237088a(5) =1082738a(6) =4207089a(7) =14362171a(8) =44066468a(9) =123591226a(10) =321014080a(11) =780210492a(12) =1789329904a(13) =3899021174a(14) =8119048135a(15) =16234703963a(16) =31301451138a(17) =58398476624a(18) =105750499888a(19) =186363500950a(20) =320365509352

External references