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A146717 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 5
7 17
8 39
9 155
10 745
11 4705
12 39573
13 369483
14 3970963
15 54943873
16 950039207
17 20417177215
18 545483266919
19 17663079620537
20 695250063366563
21 33778790635375371

[1,1,1,1,1,5,17,39,155,745,4705,39573,369483,
 3970963,54943873,950039207,20417177215,
 545483266919,17663079620537,695250063366563,
 33778790635375371]

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Last modified August 19 23:31 EDT 2022. Contains 356231 sequences. (Running on oeis4.)