A342054 Number of unrooted 3-connected triangulations of a pentagon with n interior nodes.

1, 2, 12, 73, 503, 3661, 27715, 214664, 1691049, 13494718, 108864742, 886520081, 7279644889, 60225617740, 501640531350, 4204146605148, 35432735188076, 300170956721542, 2554988646383521, 21842628856370472, 187487872615533629, 1615346166853635465, 13965841907774754081

Offset

1,2

Links

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

Crossrefs

Column k=5 of A342053.

Cf. A341925.

Sequence in context: A037515 A037718 A391605 * A020049 A020004 A078469

Adjacent sequences: A342051 A342052 A342053 * A342055 A342056 A342057

Keyword

nonn

Author

Andrew Howroyd, Feb 26 2021

Status

approved