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Search: id:A007055
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A007055 Number of words of length n in a certain language.
(Formerly M1124)
+0
1
1, 2, 4, 8, 16, 32, 52, 100, 160, 260, 424 (list; graph; listen)
OFFSET

0,2

REFERENCES

R. Kemp, On the number of words in the language {w in Sigma* | w = w^R }^2, Discrete Math., 40 (1982), 225-234.

CROSSREFS

Sequence in context: A051505 A101434 A008382 this_sequence A072207 A033860 A115909

Adjacent sequences: A007052 A007053 A007054 this_sequence A007056 A007057 A007058

KEYWORD

nonn

AUTHOR

njas, Mira Bernstein, R. Kemp

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.


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