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A058915 as a simple table

n a(n)
6 2
7 7
8 34
9 181
10 1266
11 14106
12 293756
13 12362198
14 1032671168
15 166176421788
16 50672459139597
17 29105501987344357
18 31455795559882541775
19 64032588337815572241795
20 246000022800939308314311897 

[2,7,34,181,1266,14106,293756,12362198,1032671168,
 166176421788,50672459139597,29105501987344357,
 31455795559882541775,64032588337815572241795,
 246000022800939308314311897]

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Last modified January 18 14:07 EST 2021. Contains 340254 sequences. (Running on oeis4.)