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A005317 formatted as a simple table:

n a(n)
0 1
1 2
2 5
3 14
4 43
5 142
6 494
7 1780
8 6563
9 24566
10 92890
11 353740
12 1354126
13 5204396
14 20066492
15 77575144
16 300572963
17 1166868646
18 4537698722
19 17672894044
20 68923788698
21 269129985796
22 1052051579012
23 4116719558104
24 16123810230158
25 63205319996092
26 247959300028484

[1,2,5,14,43,142,494,1780,6563,24566,92890,353740,
 1354126,5204396,20066492,77575144,300572963,
 1166868646,4537698722,17672894044,68923788698,
 269129985796,1052051579012,4116719558104,
 16123810230158,63205319996092,247959300028484]

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Last modified December 6 22:55 EST 2009. Contains 170429 sequences.


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