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A118311 formatted as a simple table:

n a(n)
1 1
2 1
3 2
4 4
5 11
6 29
7 77
8 202
9 532
10 1395
11 3664
12 9605
13 25192
14 66047
15 173183
16 453998
17 1190259
18 3120294
19 8180124
20 21444290
21 56217025
22 147373441
23 386342414
24 1012799936
25 2655067412

[1,1,2,4,11,29,77,202,532,1395,3664,9605,25192,
 66047,173183,453998,1190259,3120294,8180124,
 21444290,56217025,147373441,386342414,1012799936,
 2655067412]

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.


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