Triangle read by rows: The number of chord diagrams with n chords and k topologically connected components, 0 <= k <= n.
A322402
Triangle read by rows: The number of chord diagrams with n chords and k topologically connected components, 0 <= k <= n.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =2a(6) =0a(7) =4a(8) =6a(9) =5a(10) =0a(11) =27a(12) =36a(13) =28a(14) =14a(15) =0a(16) =248a(17) =310a(18) =225a(19) =120a(20) =42a(21) =0a(22) =2830a(23) =3396a(24) =2332a(25) =1210a(26) =495a(27) =132a(28) =0a(29) =38232
External references
- oeis: A322402