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A006907 formatted as a simple table:

n a(n)
1 0
2 0
3 1
4 4
5 10
6 29
7 55
8 153
9 307
10 588
11 1018
12 2230
13 3543
14 6878
15 11216
16 20615
17 33355
18 57980
19 90194
20 155176
21 239327
22 395473

[0,0,1,4,10,29,55,153,307,588,1018,2230,3543,6878,
 11216,20615,33355,57980,90194,155176,239327,
 395473]

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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