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A228974 as a simple table

n a(n)
1 81
2 6387
3 485397
4 32175213
5 2056956837
6 129504297807
7 8110003331559
8 506820492353703
9 31647512289810393
10 1975556815959556587
11 123306671912401161489

[81,6387,485397,32175213,2056956837,129504297807,
 8110003331559,506820492353703,31647512289810393,
 1975556815959556587,123306671912401161489]

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Last modified November 27 16:35 EST 2021. Contains 349394 sequences. (Running on oeis4.)