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A147003
as a simple table
n
a(n)
1
1
2
1
3
1
4
1
5
7
6
21
7
77
8
479
9
3600
10
33995
11
482862
12
8547925
13
199841936
14
6379998757
15
265761442757
16
14715360146745
[1,1,1,1,7,21,77,479,3600,33995,482862,8547925, 199841936,6379998757,265761442757,14715360146745]
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Last modified October 3 11:38 EDT 2023. Contains 365861 sequences. (Running on oeis4.)