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A307387 a(n) is the number of canonical polygons with 4n alternating straight and diagonal edges. 8
1, 9, 191, 8049, 418184, 24283599 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..6.

Lars Blomberg, Examples of canonical polygons with alternating straight and diagonal edges

CROSSREFS

Cf. A052436, A307387, A307391, A307426, A307454, A307455, A307456, A307519.

Sequence in context: A218422 A119291 A113269 * A332119 A261826 A184688

Adjacent sequences:  A307384 A307385 A307386 * A307388 A307389 A307390

KEYWORD

nonn,more

AUTHOR

Lars Blomberg, Apr 18 2019

STATUS

approved

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Last modified August 10 11:03 EDT 2022. Contains 356039 sequences. (Running on oeis4.)