A378338 - OEIS

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A378338

Number of n edge connected sensed planar maps with an external face in which all internal faces are triangles.

1, 0, 1, 2, 1, 4, 8, 13, 29, 60, 121, 275, 604, 1332, 3035, 6866, 15623, 36110, 83421, 193114, 451851, 1057860, 2482062, 5864466, 13873957, 32891337, 78352991, 186929542, 446870480, 1071922233, 2575310764, 6198621655, 14957681872, 36148936396, 87506326488, 212249136940, 515546059746, 1254062268245

(list; graph; refs; listen; history; text; internal format)

OFFSET

3,4

LINKS

Andrew Howroyd, Table of n, a(n) for n = 3..100

PROG

(PARI) A378338seq(30) \\ See PARI link in A378340 for program code.

CROSSREFS

Antidiagonal sums of A378336.

Cf. A378335, A378337, A378342 (achiral), A378343 (unsensed).

Sequence in context: A294104 A294061 A113820 * A319479 A303632 A133267

Adjacent sequences: A378335 A378336 A378337 * A378339 A378340 A378341

KEYWORD

nonn

AUTHOR

Andrew Howroyd, Nov 23 2024

STATUS

approved