Number of unrooted unlabeled connected triangular maps on a compact closed oriented surface with 2n faces (and thus 3n edges).

A129114

Number of unrooted unlabeled connected triangular maps on a compact closed oriented surface with 2n faces (and thus 3n edges).

Terms

    a(0) =1a(1) =3a(2) =11a(3) =81a(4) =1228a(5) =28174a(6) =843186a(7) =30551755a(8) =1291861997a(9) =62352938720

External references