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A264943
as a simple table
n
a(n)
1
0
2
1
3
2350
4
11375145
5
137409486772
6
3537141103745065
7
173357342638694530002
8
14844736259829478729001905
[0,1,2350,11375145,137409486772,3537141103745065, 173357342638694530002,14844736259829478729001905]