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A114515 formatted as a simple table:

n a(n)
0 0
1 0
2 1
3 3
4 12
5 45
6 171
7 651
8 2488
9 9540
10 36690
11 141482
12 546864
13 2118207
14 8219967
15 31952115
16 124389552
17 484908408
18 1892657934
19 7395597354
20 28928182440
21 113260606074
22 443827115886
23 1740592240638
24 6831289801872
25 26829201570600

[0,0,1,3,12,45,171,651,2488,9540,36690,141482,
 546864,2118207,8219967,31952115,124389552,
 484908408,1892657934,7395597354,28928182440,
 113260606074,443827115886,1740592240638,
 6831289801872,26829201570600]

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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