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A131646 as a simple table

n a(n)
1 0
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 18
12 19
13 20
14 1027
15 1028
16 1029
17 14745
18 9020076688681
19 9439828025162228377
20 9439829801208141318 

[0,1,2,3,4,5,6,7,8,9,18,19,20,1027,1028,1029,
 14745,9020076688681,9439828025162228377,
 9439829801208141318]

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Last modified May 22 06:45 EDT 2013. Contains 225511 sequences.