Number of tau-isomorphism classes of spherical bitrades with |T0| = n.

A169955

Number of tau-isomorphism classes of spherical bitrades with |T0| = n.

Terms

    a(0) =1a(1) =0a(2) =3a(3) =1a(4) =6a(5) =9a(6) =30a(7) =51a(8) =198a(9) =470a(10) =1623a(11) =4830a(12) =16070a(13) =51948a(14) =175047a(15) =588120a(16) =2015226a(17) =6933048a(18) =24123941a(19) =84428820a(20) =297753519

External references