Triangle T(n,k) read by rows: number of chord diagrams with k isolated bracelets and a total of n chords.

A371305

Triangle T(n,k) read by rows: number of chord diagrams with k isolated bracelets and a total of n chords.

Terms

    a(0) =1a(1) =2a(2) =1a(3) =5a(4) =2a(5) =1a(6) =17a(7) =8a(8) =2a(9) =1a(10) =79a(11) =27a(12) =8a(13) =2a(14) =1a(15) =554a(16) =128a(17) =31a(18) =8a(19) =2a(20) =1a(21) =5283a(22) =797a(23) =143a(24) =31a(25) =8a(26) =2a(27) =1a(28) =65346a(29) =6939

External references