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A239376
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Words of length n over the alphabet {0,...,n-1} that avoid the pattern 1223.
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0
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1, 1, 4, 27, 252, 2935, 40330, 632352, 11070192, 213109881, 4460816992, 100651469996, 2431215093846, 62514061904580, 1703115911340272, 48965931282533948, 1480607510447121328, 46944740372499336665
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,3
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LINKS
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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