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A069990 as a simple table

n a(n)
1 1
2 15
3 389
4 17687
5 1230957
6 121576879
7 16166877205
8 2784640846791
9 603078760252733
10 160399574539581023
11 51396542533525536741
12 19528343388372578867575
13 8681260357657270101974029

[1,15,389,17687,1230957,121576879,16166877205,
 2784640846791,603078760252733,160399574539581023,
 51396542533525536741,19528343388372578867575,
 8681260357657270101974029]

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Last modified April 11 18:59 EDT 2021. Contains 342888 sequences. (Running on oeis4.)