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A146848 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 17
8 21
9 589
10 1209
11 14169
12 35833
13 752335
14 2255937
15 153849079
16 571403355
17 75555523219
18 350876915239
19 81358170973501
20 466475370757593
21 166717546455270435
22 1170203411896641439

[1,1,1,1,1,1,17,21,589,1209,14169,35833,752335,
 2255937,153849079,571403355,75555523219,
 350876915239,81358170973501,466475370757593,
 166717546455270435,1170203411896641439]

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Last modified December 7 22:50 EST 2021. Contains 349590 sequences. (Running on oeis4.)