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A362657 Number of bracelets consisting of three instances each of n swappable colors. 4
1, 1, 3, 25, 713, 47283, 5301453, 862284559, 190869905951, 55139769554236, 20148062989955675, 9084944524391553737, 4955080153387098326546, 3215465859346835309769199, 2448347575754387175150096999, 2161727686219210764644850060171 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
REFERENCES
F. Harary and E. Palmer, Graphical Enumeration, Academic Press, 1973, page 143.
LINKS
H. Fripertinger, Enumeration in Musical Theory, Beiträge zur Elektronischen Musik, 1 (1992).
Marko Riedel, math.stackexchange.com, Necklaces and bracelets
CROSSREFS
Sequence in context: A355123 A306795 A131310 * A365359 A062411 A136516
KEYWORD
nonn
AUTHOR
Marko Riedel, Apr 28 2023
STATUS
approved

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Last modified April 14 10:04 EDT 2024. Contains 371657 sequences. (Running on oeis4.)