Number of unrooted 3-connected triangulations of a hexagon with n interior nodes.
A342055
Number of unrooted 3-connected triangulations of a hexagon with n interior nodes.
Terms
- a(0) =1a(1) =3a(2) =20a(3) =140a(4) =1089a(5) =8796a(6) =72204a(7) =596906a(8) =4958736a(9) =41365110a(10) =346477770a(11) =2914165157a(12) =24612003577a(13) =208711039484
External references
- oeis: A342055