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A215328
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Smooth Lyndon words with 3 colors.
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5
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1, 3, 2, 5, 10, 24, 49, 112, 240, 534, 1175, 2626, 5848, 13153, 29594, 66955, 151814, 345494, 788049, 1802675, 4132469, 9495242, 21859912, 50423465, 116511119, 269666586, 625101288, 1451128164, 3373250909, 7851415835
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OFFSET
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0,2
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COMMENTS
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We call a Lyndon word (x[1],x[2],...,x[n]) smooth if abs(x[k]-x[k-1]) <= 1 for 2<=k<=n.
All binary Lyndon words (2 colors, A001037) are necessarily smooth.
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LINKS
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EXAMPLE
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CROSSREFS
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Cf. A027376 (Lyndon words, 3 colors), A215327 (smooth necklaces, 3 colors).
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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