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A211936
Number of distinct finite languages over 3-ary alphabet, whose minimum regular expression has alphabetic width n.
0
2, 6, 60, 806, 13182, 242070, 4785115
OFFSET
1,1
LINKS
Hermann Gruber, Jonathan Lee, and Jeffrey Shallit, Enumerating regular expressions and their languages, arXiv:1204.4982v1 [cs.FL]
CROSSREFS
Sequence in context: A376492 A371018 A376476 * A156972 A086332 A180402
KEYWORD
nonn
AUTHOR
Hermann Gruber, Apr 25 2012
STATUS
approved