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A198178 as a simple table

n a(n)
1 1
2 4
3 9
4 59
5 2033
6 51688
7 4522496
8 559601114
9 174674654015

[1,4,9,59,2033,51688,4522496,559601114,
 174674654015]

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Last modified June 17 15:38 EDT 2021. Contains 345085 sequences. (Running on oeis4.)