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.

0

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,new

AUTHOR

Andrew Howroyd, Nov 23 2024

STATUS

approved