A342055 Number of unrooted 3-connected triangulations of a hexagon with n interior nodes.

1, 3, 20, 140, 1089, 8796, 72204, 596906, 4958736, 41365110, 346477770, 2914165157, 24612003577, 208711039484, 1776879432103, 15185140895506, 130242884479498, 1120949733518971, 9679158242220797, 83836374509942511, 728279201686023394, 6344019713842496995

Offset: 1

Author

Andrew Howroyd, Feb 26 2021

Keywords

• nonn

Links

• Andrew Howroyd, Table of n, a(n) for n = 1..500

Crossrefs

Column k=6 of A342053.

Cf. A341926.