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A098641 formatted as a simple table:

n a(n)
1 1
2 1
3 2
4 3
5 6
6 14
7 41
8 157
9 803
10 5564
11 53384
12 718844
13 13783708
14 380676448
15 15298907733
16 902438020514
17 78720750045598
18 10220860796171917
19 1986422867300209784
20 580763241873718042562
21 256553744608217295298827

[1,1,2,3,6,14,41,157,803,5564,53384,718844,
 13783708,380676448,15298907733,902438020514,
 78720750045598,10220860796171917,
 1986422867300209784,580763241873718042562,
 256553744608217295298827]

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Last modified December 13 23:45 EST 2009. Contains 170824 sequences.


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