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A113226 formatted as a simple table:

n a(n)
0 1
1 2
2 6
3 23
4 107
5 585
6 3669
7 25932
8 203768
9 1761109
10 16595757
11 169287873
12 1857903529
13 21823488238
14 273130320026
15 3627845694283
16 50962676849199
17 754814462534449
18 11754778469338581
19 191998054346198680

[1,2,6,23,107,585,3669,25932,203768,1761109,
 16595757,169287873,1857903529,21823488238,
 273130320026,3627845694283,50962676849199,
 754814462534449,11754778469338581,
 191998054346198680]

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.


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