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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
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OFFSET
1,1
LINKS
Table of n, a(n) for n=1..7.
Hermann Gruber, Jonathan Lee, and Jeffrey Shallit,
Enumerating regular expressions and their languages
, arXiv:1204.4982v1 [cs.FL]
CROSSREFS
Sequence in context:
A356259
A215720
A371018
*
A156972
A086332
A180402
Adjacent sequences:
A211933
A211934
A211935
*
A211937
A211938
A211939
KEYWORD
nonn
AUTHOR
Hermann Gruber
, Apr 25 2012
STATUS
approved
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Last modified May 9 19:33 EDT 2024. Contains 372354 sequences. (Running on oeis4.)