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A209217 as a simple table

n a(n)
1 2
2 13
3 115
4 1468
5 22738
6 415695
7 8685016
8 187123430

[2,13,115,1468,22738,415695,8685016,187123430]

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Last modified February 22 15:49 EST 2019. Contains 320399 sequences. (Running on oeis4.)