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A114297 formatted as a simple table:

n a(n)
0 1
1 1
2 1
3 2
4 5
5 13
6 42
7 150
8 553
9 2202
10 9233
11 39726
12 176932
13 810798
14 3786137
15 18022100
16 87265298
17 428202617
18 2127088358
19 10684752474
20 54181245592
21 277101480826
22 1428262595206
23 7412626391101
24 38712130945272
25 203330779196084

[1,1,1,2,5,13,42,150,553,2202,9233,39726,176932,
 810798,3786137,18022100,87265298,428202617,
 2127088358,10684752474,54181245592,277101480826,
 1428262595206,7412626391101,38712130945272,
 203330779196084]

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Last modified December 10 12:09 EST 2009. Contains 170569 sequences.


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