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A146691 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 19
8 31
9 599
10 1163
11 13781
12 34743
13 686711
14 2032193
15 168115995
16 630196685
17 103169062863
18 486468362253
19 96427000262963
20 558209750316079
21 186248241738031493

[1,1,1,1,1,1,19,31,599,1163,13781,34743,686711,
 2032193,168115995,630196685,103169062863,
 486468362253,96427000262963,558209750316079,
 186248241738031493]

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Last modified December 7 12:36 EST 2022. Contains 358656 sequences. (Running on oeis4.)