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A203216
as a simple table
n
a(n)
1
1
2
2
3
20
4
145
5
3738
6
159746
7
13220858
8
2414169949
9
858834945528
[1,2,20,145,3738,159746,13220858,2414169949, 858834945528]
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Last modified April 16 12:05 EDT 2024. Contains 371711 sequences. (Running on oeis4.)
