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A369591
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a(n) = number of Yamanouchi words over the alphabet {1, 2, 3} of length n that start with 3.
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2
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0, 0, 1, 2, 5, 14, 35, 90, 245, 644, 1716, 4707, 12727, 34683, 96174, 264784, 732785, 2051338, 5719684, 16007081, 45160093, 127106181, 358743903, 1018566177, 2887666445, 8204375034
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,4
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LINKS
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CROSSREFS
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Number of Yamanouchi words over the alphabet {1, 2, 3} is given by A001006, and by A217323 for the words containing 3.
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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