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A058041
as a simple table
n
a(n)
1
378
2
2548
3
2836295
4
4473671462
5
23040925705
6
13579716377989
7
21467102506955
8
119429556097859
[378,2548,2836295,4473671462,23040925705, 13579716377989,21467102506955,119429556097859]