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A197659
as a simple table
n
a(n)
1
1
2
1
3
4
4
12
5
42
6
172
7
768
8
4488
9
28215
10
202201
11
1848800
12
18647319
13
230926401
[1,1,4,12,42,172,768,4488,28215,202201,1848800, 18647319,230926401]
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Last modified September 9 20:39 EDT 2024. Contains 375765 sequences. (Running on oeis4.)
