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A002908 formatted as a simple table:

n a(n)
1 2
2 4
3 8
4 24
5 84
6 328
7 1372
8 6024
9 27412
10 128228
11 613160
12 2985116
13 14751592
14 73825416
15 373488764
16 1907334616
17 9820757380
18 50934592820
19 265877371160

[2,4,8,24,84,328,1372,6024,27412,128228,613160,
 2985116,14751592,73825416,373488764,1907334616,
 9820757380,50934592820,265877371160]

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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