Triangle read by rows: T(n,k) is the number of tree-rooted planar maps with n edges and k+1 faces, n >= 0, k = 0..n.
A342982
Triangle read by rows: T(n,k) is the number of tree-rooted planar maps with n edges and k+1 faces, n >= 0, k = 0..n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =6a(5) =2a(6) =5a(7) =30a(8) =30a(9) =5a(10) =14a(11) =140a(12) =280a(13) =140a(14) =14a(15) =42a(16) =630a(17) =2100a(18) =2100a(19) =630a(20) =42a(21) =132a(22) =2772a(23) =13860a(24) =23100a(25) =13860a(26) =2772a(27) =132a(28) =429a(29) =12012
External references
- oeis: A342982