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A032443
Sum(binomial(2*n,i),i=0..n).
+0
20
1, 3, 11, 42, 163, 638, 2510, 9908, 39203, 155382, 616666, 2449868, 9740686, 38754732, 154276028, 614429672, 2448023843, 9756737702, 38897306018, 155111585372, 618679078298, 2468152192772
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.
AT&T Labs Research
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