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A052626
A simple regular expression in a labeled universe.
+0
1
3, 4, 12, 60, 432, 4080, 47520, 655200, 10402560, 186520320, 3723148800, 81829440000, 1962948556800, 51024208435200, 1428503479603200, 42852489039360000, 1371237803679744000, 46621373950255104000
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.
AT&T Labs Research
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