A341925 Number of 3-connected triangulations of a pentagon up to orientation-preserving isomorphisms with n interior nodes.

1, 2, 16, 122, 925, 7066, 54560, 426462, 3372291, 26956270, 217614820, 1772645420, 14557912005, 120446430162, 1003264150080, 8408233633984, 70865259181716, 600341163614280, 5109974618238720, 43685248156083450, 374975710962745835, 3230692210606121118

Offset

1,2

Links

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

Crossrefs

Column k=5 of A341923.

Cf. A342054.

Sequence in context: A090672 A200820 A209361 * A229808 A301947 A027309

Adjacent sequences: A341922 A341923 A341924 * A341926 A341927 A341928

Keyword

nonn

Author

Andrew Howroyd, Feb 26 2021

Status

approved