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A293031
Number of patterns enumerated in Phase 2 of an algorithm to enumerate flat-foldable single-vertex crease patterns with unit angle 180/n degrees.
1
1, 2, 7, 27, 143, 837, 5529, 38305, 276441, 2042990, 15396071, 117761000, 912100793, 7139581543, 56400579759, 449129924559
OFFSET
1,2
COMMENTS
This is an upper bound for the final answer, A304932(n).
See the Ouchi and Uehara reference for details.
LINKS
Koji Ouchi and Ryuhei Uehara, Efficient Enumeration of Flat-Foldable Single Vertex Crease Patterns, In: Poon SH., Rahman M., Yen HC. (eds) WALCOM: Algorithms and Computation. WALCOM 2017. Lecture Notes in Computer Science, vol 10167, pp. 19-29.
CROSSREFS
Cf. A304932.
Sequence in context: A342056 A363199 A367594 * A255487 A077622 A137108
KEYWORD
nonn,more
AUTHOR
Eric M. Schmidt, Sep 28 2017
STATUS
approved