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A153678
as a simple table
n
a(n)
1
1
2
2
3
3
4
4
5
5
6
6
7
585
8
1164
9
1707
10
522271
11
3675376
12
3906074
13
9424094
[1,2,3,4,5,6,585,1164,1707,522271,3675376,3906074, 9424094]