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A049955 formatted as a simple table:

n a(n)
1 1
2 2
3 2
4 7
5 19
6 33
7 71
8 168
9 471
10 776
11 1557
12 3140
13 6415
14 13438
15 29240
16 68778
17 192896
18 317016
19 634037
20 1268100
21 2536335
22 5073278
23 10148920
24 20308138
25 40671616
26 81591470
27 164134024
28 332073226
29 679381312
30 1420045956
31 3090573668

[1,2,2,7,19,33,71,168,471,776,1557,3140,6415,
 13438,29240,68778,192896,317016,634037,1268100,
 2536335,5073278,10148920,20308138,40671616,
 81591470,164134024,332073226,679381312,1420045956,
 3090573668]

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Last modified December 5 23:38 EST 2009. Contains 170428 sequences.


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