Triangle read by rows: T(n,k) = number of rooted maps with n vertices and k faces on a non-orientable surface of type 2 (0 <= k <= n).

A214806

Triangle read by rows: T(n,k) = number of rooted maps with n vertices and k faces on a non-orientable surface of type 2 (0 <= k <= n).

Terms

    a(0) =0a(1) =0a(2) =488a(3) =0a(4) =11660a(5) =375552a(6) =0a(7) =160680a(8) =6652366a(9) =146387872a(10) =0a(11) =1678880a(12) =86303920a(13) =2298445830a(14) =42795288180a(15) =0a(16) =14771680a(17) =918342738a(18) =28995928200a(19) =629732269188

External references