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A147020 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 3
6 1
7 15
8 9
9 133
10 33
11 3625
12 1063
13 187163
14 37071
15 15421524
16 1848587
17 2304715815
18 239808955
19 763574051396
20 59268926793
21 494418074953389
22 27771432799839

[1,1,1,1,3,1,15,9,133,33,3625,1063,187163,37071,
 15421524,1848587,2304715815,239808955,
 763574051396,59268926793,494418074953389,
 27771432799839]

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)