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A181996 as a simple table

n a(n)
0 1
1 1
2 3
3 1
4 15
5 10
6 1
7 105
8 105
9 25
10 1
11 945
12 1260
13 490
14 56
15 1
16 10395
17 17325
18 9450
19 1918
20 119
21 1
22 135135
23 270270
24 190575
25 56980
26 6825
27 246
28 1
29 2027025
30 4729725
31 4099095
32 1636635
33 302995
34 22935
35 501
36 1
37 34459425
38 91891800
39 94594500
40 47507460
41 12122110
42 1487200

[1,1,3,1,15,10,1,105,105,25,1,945,1260,490,56,1,
 10395,17325,9450,1918,119,1,135135,270270,190575,
 56980,6825,246,1,2027025,4729725,4099095,1636635,
 302995,22935,501,1,34459425,91891800,94594500,
 47507460,12122110,1487200]

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Last modified April 25 06:14 EDT 2024. Contains 371964 sequences. (Running on oeis4.)