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Search: id:A074419
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| A074419 |
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Number of 5-ary Lyndon words of length n over Z_5 with trace 1 and subtrace 2. |
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+0
8
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| 0, 0, 0, 5, 25, 107, 450, 1950, 8666, 39050, 177500, 813490, 3755048, 17437275, 81380200
(list; graph; listen)
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OFFSET
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1,4
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COMMENT
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Same as number of Lyndon words of length n over Z_5 with trace 2 and subtrace 3; trace 3 and subtrace 3; trace 4 and subtrace 2. Same as number of Lyndon words of length n over GF(5) with trace 1 and subtrace 2; trace 2 and subtrace 3; trace 3 and subtrace 3; trace 4 and subtrace 2.
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LINKS
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F. Ruskey, 5-ary Lyndon words of given trace and subtrace
F. Ruskey, 5-ary Lyndon words of given trace and subtrace over GF(5)
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EXAMPLE
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a(4;1,2)=5 since the five 5-ary Lyndon words of trace 1, subtrace 2 and length 4 are { 0222, 1113, 1244, 1424, 1442 }.
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CROSSREFS
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Cf. A074414, A074415, A074416, A074417, A074418, A074420, A074421.
Sequence in context: A146882 A067971 A111641 this_sequence A147161 A092440 A124534
Adjacent sequences: A074416 A074417 A074418 this_sequence A074420 A074421 A074422
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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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