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A140988
as a simple table
n
a(n)
1
1
2
2
3
5
4
20
5
139
6
1777
7
42295
8
1888140
9
158903233
10
25355226287
11
7707419775769
[1,2,5,20,139,1777,42295,1888140,158903233, 25355226287,7707419775769]
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Last modified September 14 13:32 EDT 2024. Contains 375921 sequences. (Running on oeis4.)
