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A221482
as a simple table
n
a(n)
1
0
2
8235
3
2017564
4
1219698562
5
579209730382
6
290839286759257
7
144288378372479004
8
71554709571024301795
[0,8235,2017564,1219698562,579209730382, 290839286759257,144288378372479004, 71554709571024301795]