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A088369
G.f.: 1/(1-x-x^2)^x.
+0
1
1, 0, 2, 9, 44, 390, 3474, 37800, 471344, 6602904, 103271400, 1779944760, 33542915592, 686101244400, 15139184749584, 358465510133640, 9066087526045440, 243928110816129600, 6956913949298380224
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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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