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A341921 Number of simple strong triangulations of a fixed hexagon with n interior nodes. 2
1, 9, 50, 254, 1287, 6630, 34846, 186714, 1018095, 5638035, 31651992, 179850344, 1032901028, 5988670002, 35017696806, 206326044386, 1224068679855, 7307391855855, 43871253636210, 264755875041630, 1605357997312335, 9776732655285960, 59781214452500424, 366905787075963864 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

PROG

(PARI) R(25, 3) \\ R defined in A210664.

CROSSREFS

Row m=3 of A210664.

Cf. A341918.

Sequence in context: A222993 A171480 A257589 * A231413 A007681 A279972

Adjacent sequences:  A341918 A341919 A341920 * A341922 A341923 A341924

KEYWORD

nonn

AUTHOR

Andrew Howroyd, Feb 24 2021

STATUS

approved

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Last modified January 18 00:48 EST 2022. Contains 350410 sequences. (Running on oeis4.)