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Search: id:A068596
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| A068596 |
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Number of 4-ary Lyndon words whose trace and subtrace are both 0 mod 4. |
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12
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| 1, 0, 1, 1, 11, 44, 169, 588, 1948, 6560, 23133, 84565, 317755, 1198336
(list; graph; listen)
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OFFSET
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1,5
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COMMENT
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The trace of a word is the sum of its characters; the subtrace of a word is the sum of all products of pairs of its characters.
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LINKS
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F. Ruskey, 4-ary Lyndon words of given trace and subtrace
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CROSSREFS
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Cf. A074403, A074404, A074405, A074406, A074407, A074408, A074409, A074410, A074411, A074412, A074413.
Sequence in context: A111080 A022816 A120537 this_sequence A002089 A042521 A041228
Adjacent sequences: A068593 A068594 A068595 this_sequence A068597 A068598 A068599
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KEYWORD
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nonn
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AUTHOR
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Frank Ruskey (fruskey(AT)cs.uvic.ca), Mar 28 2002
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