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A284999 as a simple table

n a(n)
1 2
2 1
3 1
4 2
5 3
6 6
7 15
8 41
9 120
10 390
11 1356
12 5040
13 19885
14 82835
15 362880
16 1665838
17 7988888
18 39916800
19 207304279
20 1116669004
21 6227020800
22 35886673907
23 213407853923
24 1307674368000
25 8245960182039
26 53446811415730
27 355687428096000
28 2427977164711193
29 16984208960998390

[2,1,1,2,3,6,15,41,120,390,1356,5040,19885,82835,
 362880,1665838,7988888,39916800,207304279,
 1116669004,6227020800,35886673907,213407853923,
 1307674368000,8245960182039,53446811415730,
 355687428096000,2427977164711193,
 16984208960998390]

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Last modified May 5 18:56 EDT 2024. Contains 372277 sequences. (Running on oeis4.)