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A219243
as a simple table
n
a(n)
1
1
2
1
3
1
4
1
5
31
6
45
7
1513
8
2836
9
114327
10
255053
11
12537954
12
31599601
13
427
14
5246800005
[1,1,1,1,31,45,1513,2836,114327,255053,12537954, 31599601,427,5246800005]