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A158197
Expansion of (1-x^2*c(x)^4)/(1-4*x*c(x)^2), c(x) the g.f. of
A000108
.
+0
2
1, 4, 23, 140, 866, 5388, 33603, 209796, 1310510, 8188328, 51169094, 319779544, 1998527188, 12490460620, 78064190235, 487896926580, 3049340393430, 19058321475960, 119114304522450, 744463650984360, 4652895041524380
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.
AT&T Labs Research
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