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A049685
a(n)=L(4n+2)/3, where L=
A000032
(the Lucas sequence).
+0
13
1, 6, 41, 281, 1926, 13201, 90481, 620166, 4250681, 29134601, 199691526, 1368706081, 9381251041, 64300051206, 440719107401, 3020733700601, 20704416796806, 141910183877041, 972666870342481
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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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