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A000522 formatted as a simple table:

n a(n)
0 1
1 2
2 5
3 16
4 65
5 326
6 1957
7 13700
8 109601
9 986410
10 9864101
11 108505112
12 1302061345
13 16926797486
14 236975164805
15 3554627472076
16 56874039553217
17 966858672404690
18 17403456103284421
19 330665665962404000
20 6613313319248080001

[1,2,5,16,65,326,1957,13700,109601,986410,9864101,
 108505112,1302061345,16926797486,236975164805,
 3554627472076,56874039553217,966858672404690,
 17403456103284421,330665665962404000,
 6613313319248080001]

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Last modified November 27 14:46 EST 2009. Contains 167570 sequences.


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