Number of oriented two-component rational links (or two-bridge links) with crossing number n (a chiral pair is counted as two distinct ones).

A352737

Number of oriented two-component rational links (or two-bridge links) with crossing number n (a chiral pair is counted as two distinct ones).

Terms

    a(0) =2a(1) =0a(2) =4a(3) =2a(4) =10a(5) =10a(6) =30a(7) =42a(8) =102a(9) =170a(10) =374a(11) =682a(12) =1430a(13) =2730a(14) =5590a(15) =10922a(16) =22102a(17) =43690a(18) =87894a(19) =174762a(20) =350550a(21) =699050a(22) =1400150a(23) =2796202a(24) =5596502a(25) =11184810a(26) =22377814a(27) =44739242a(28) =89494870a(29) =178956970

External references