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A033315 as a simple table

n a(n)
1 1
2 3
3 9
4 19
5 649
6 9801
7 24335
8 66249
9 1766319049
10 158070671986249
11 2469645423824185801
12 159150073798980475849
13 838721786045180184649
14 25052977273092427986049
15 3879474045914926879468217167061449

[1,3,9,19,649,9801,24335,66249,1766319049,
 158070671986249,2469645423824185801,
 159150073798980475849,838721786045180184649,
 25052977273092427986049,
 3879474045914926879468217167061449]

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Last modified July 26 11:27 EDT 2021. Contains 346294 sequences. (Running on oeis4.)