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A074446
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Number of 4-ary Lyndon words of length n over GF(4) with trace 0 and subtrace 0.
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4
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1, 0, 2, 6, 15, 40, 153, 528, 1841, 6528, 23901, 87550, 322875, 1198080, 4474738
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OFFSET
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1,3
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LINKS
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Table of n, a(n) for n=1..15.
F. Ruskey, Number of 4-ary Lyndon words over GF(4) with given trace and subtrace
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EXAMPLE
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a(3;0,0)=2 since the two 4-ary Lyndon words of trace 0, subtrace 0 and length 3 are { 123, 132 }.
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CROSSREFS
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Cf. A074447, A074448, A074449, A074450.
Sequence in context: A206000 A061322 A004664 * A180666 A121328 A139379
Adjacent sequences: A074443 A074444 A074445 * A074447 A074448 A074449
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KEYWORD
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easy,nonn,changed
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AUTHOR
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Frank Ruskey and Nate Kube, Aug 23 2002
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STATUS
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approved
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