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A052814
A simple grammar.
+0
1
0, 1, 1, 2, 6, 16, 49, 156, 511, 1723, 5942, 20817, 73938, 265611, 963225, 3521667, 12966696, 48037862, 178936340, 669748197, 2517688316
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.
AT&T Labs Research
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