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A304932 The number of flat-foldable single vertex crease patterns with unit angle Pi/n. 2
1, 2, 6, 20, 87, 420, 2254, 12676, 73819, 438795, 2649555, 16188915, 99888892, 621428188, 3893646748, 24548337096, 155622071065, 991375878185, 6343073841027 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
K. Ouchi and R. Uehara, Efficient Enumeration of Flat-Foldable Single Vertex Crease Patterns, In WALCOM: Algorithms and Computation. WALCOM 2017. Lecture Notes in Computer Science, vol 10167 (pp. 19-29), 2017, Springer, Cham. Gives incorrect a(12).
CROSSREFS
Cf. A293031.
Sequence in context: A089179 A177483 A004104 * A293032 A374346 A241497
KEYWORD
nonn,more
AUTHOR
Koji Ouchi, May 21 2018
STATUS
approved

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Last modified July 25 05:51 EDT 2024. Contains 374586 sequences. (Running on oeis4.)