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A050637 as a simple table

n a(n)
1 2
2 8
3 42
4 2458
5 310042
6 2929997542
7 1046218875000310042
8 406005268741864709999999997070002458
9 50376698115810287966925579573179705000000000000000001046218875000310042

[2,8,42,2458,310042,2929997542,
 1046218875000310042,
 406005268741864709999999997070002458,
 50376698115810287966925579573179705000000000000000\
 001046218875000310042]

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Last modified September 28 02:44 EDT 2020. Contains 337392 sequences. (Running on oeis4.)