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A221439 as a simple table

n a(n)
1 1
2 9
3 221
4 18393
5 6415089
6 8569227073
7 43045366565233
8 827667742380908273
9 60943705772313538144913
10 17137605013408451421126281145
11 18409652574456111249919293718583541 

[1,9,221,18393,6415089,8569227073,43045366565233,
 827667742380908273,60943705772313538144913,
 17137605013408451421126281145,
 18409652574456111249919293718583541]

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Last modified May 16 11:35 EDT 2022. Contains 353704 sequences. (Running on oeis4.)