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Search: id:A074408
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| A074408 |
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Number of 4-ary Lyndon words of length n over Z_4 with trace 1 and subtrace 2. |
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+0
12
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| 0, 1, 2, 4, 11, 32, 128, 512, 1920, 6963, 24576, 87380, 317755, 1179648
(list; graph; listen)
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OFFSET
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1,3
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COMMENT
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Same as the number of 4-ary Lyndon words of length n over Z_4 with trace 3 and subtrace 2.
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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(3;1,2)=2 since the two 4-ary Lyndon words of trace 1, subtrace 2 and length 3 are ( 023, 032 }.
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CROSSREFS
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Cf. A068596, A074403, A074404, A074405, A074406, A074407, A074409, A074410, A074411, A074412, A074413.
Sequence in context: A103293 A123418 A123412 this_sequence A123425 A123414 A123410
Adjacent sequences: A074405 A074406 A074407 this_sequence A074409 A074410 A074411
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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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