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A211951 Number of distinct regular languages over 3-ary alphabet, whose minimum regular expression has ordinary length n. 0
5, 12, 48, 192, 760, 3090, 12442, 51044, 211812, 891228 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..10.
Hermann Gruber, Jonathan Lee, and Jeffrey Shallit, Enumerating regular expressions and their languages, arXiv:1204.4982v1 [cs.FL]
CROSSREFS
Sequence in context: A006078 A046612 A254217 * A356539 A009425 A009416
Adjacent sequences: A211948 A211949 A211950 * A211952 A211953 A211954
KEYWORD
nonn,hard
AUTHOR
Hermann Gruber, Apr 26 2012
STATUS
approved

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Last modified June 6 18:47 EDT 2024. Contains 373134 sequences. (Running on oeis4.)