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A266598
as a simple table
n
a(n)
1
1
2
0
3
6
4
964
5
289569
6
188978578
7
207181732018
8
357677449791820
9
912613747687355713
[1,0,6,964,289569,188978578,207181732018, 357677449791820,912613747687355713]