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A052530
a(0)=0, a(1)=2; for n>=2, a(n)=4*a(n-1)-a(n-2).
+0
13
0, 2, 8, 30, 112, 418, 1560, 5822, 21728, 81090, 302632, 1129438, 4215120, 15731042, 58709048, 219105150, 817711552, 3051741058, 11389252680, 42505269662, 158631825968, 592022034210, 2209456310872, 8245803209278, 30773756526240
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 4 15:11 EST 2009. Contains 170347 sequences.
AT&T Labs Research
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