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Search: id:A074413
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| A074413 |
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Number of 4-ary Lyndon words of length n over Z_4 with trace 2 and subtrace 3. |
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+0
12
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| 0, 0, 2, 6, 16, 44, 128, 440, 1706, 6496, 24576, 90004, 327680, 1198336
(list; graph; listen)
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OFFSET
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1,3
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LINKS
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F. Ruskey, 4-ary Lyndon words of given trace and subtrace
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EXAMPLE
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a(4;2,3)=6 since the six 4-ary Lyndon words of trace 2, subtrace 3 and length 4 are { 0123, 0132, 0213, 0231, 0312, 0321 }.
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CROSSREFS
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Cf. A068596, A074403, A074404, A074405, A074406, A074407, A074408, A074409, A074410, A074411, A074412.
Sequence in context: A002605 A026134 A105696 this_sequence A055544 A126285 A026163
Adjacent sequences: A074410 A074411 A074412 this_sequence A074414 A074415 A074416
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KEYWORD
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easy,nonn
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AUTHOR
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Frank Ruskey, Nate Kube (fruskey(AT)cs.uvic.ca), Aug 22 2002
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