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A144621 as a simple table

n a(n)
0 1
1 1
2 3
3 21
4 945
5 1845585
6 6922244887425
7 96595543392827888368850625
8 18734868077603955570406193129480504943860234712890625 

[1,1,3,21,945,1845585,6922244887425,
 96595543392827888368850625,
 18734868077603955570406193129480504943860234712890\
 625]

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Last modified August 3 18:16 EDT 2024. Contains 374899 sequences. (Running on oeis4.)