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A063894 formatted as a simple table:

n a(n)
1 2
2 1
3 2
4 4
5 10
6 25
7 68
8 187
9 532
10 1532
11 4492
12 13308
13 39870
14 120433
15 366656
16 1123504
17 3463050
18 10729234
19 33396202
20 104381385
21 327477814
22 1030903514
23 3255394686
24 10309154738
25 32732315724
26 104177891232
27 332308237666
28 1062192108053

[2,1,2,4,10,25,68,187,532,1532,4492,13308,39870,
 120433,366656,1123504,3463050,10729234,33396202,
 104381385,327477814,1030903514,3255394686,
 10309154738,32732315724,104177891232,332308237666,
 1062192108053]

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Last modified December 9 14:43 EST 2009. Contains 170430 sequences.


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