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A028558 formatted as a simple table:

n a(n)
1 0
2 1
3 6
4 18
5 24
6 202
7 203
8 814
9 2067
10 2178
11 2207
12 20402
13 25116
14 64493
15 82566
16 207067
17 2040402
18 2187142
19 2233097
20 6887078 

[0,1,6,18,24,202,203,814,2067,2178,2207,20402,
 25116,64493,82566,207067,2040402,2187142,2233097,
 6887078]

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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