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A019988 formatted as a simple table:

n a(n)
1 1
2 2
3 5
4 16
5 55
6 222
7 950
8 4265
9 19591
10 91678
11 434005
12 2073783
13 9979772
14 48315186
15 235088794
16 1148891118
17 5636168859

[1,2,5,16,55,222,950,4265,19591,91678,434005,
 2073783,9979772,48315186,235088794,1148891118,
 5636168859]

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.


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