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A221239
as a simple table
n
a(n)
1
0
2
3913
3
2217402
4
1130617545
5
543708183481
6
258758829845879
7
122696503196445552
8
58120801668253857554
[0,3913,2217402,1130617545,543708183481, 258758829845879,122696503196445552, 58120801668253857554]
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Last modified August 30 13:06 EDT 2024. Contains 375543 sequences. (Running on oeis4.)