Array read by antidiagonals: T(m,n) is the number of acyclic orientations in the grid graph P_m X P_n.

A360922

Array read by antidiagonals: T(m,n) is the number of acyclic orientations in the grid graph P_m X P_n.

Terms

    a(0) =1a(1) =2a(2) =2a(3) =4a(4) =14a(5) =4a(6) =8a(7) =98a(8) =98a(9) =8a(10) =16a(11) =686a(12) =2398a(13) =686a(14) =16a(15) =32a(16) =4802a(17) =58670a(18) =58670a(19) =4802a(20) =32a(21) =64a(22) =33614a(23) =1435414a(24) =5015972a(25) =1435414a(26) =33614a(27) =64a(28) =128a(29) =235298

External references