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A209473 as a simple table

n a(n)
1 21
2 4357
3 872155
4 128482557
5 18325569581
6 2562183150939
7 361061356214305
8 51319914886788615
9 7305894279344843019
10 1039334276592539794039
11 147753108120172416661659
12 21001491074931334724912493

[21,4357,872155,128482557,18325569581,
 2562183150939,361061356214305,51319914886788615,
 7305894279344843019,1039334276592539794039,
 147753108120172416661659,
 21001491074931334724912493]

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Last modified May 18 14:41 EDT 2022. Contains 353816 sequences. (Running on oeis4.)