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A157058 as a simple table

n a(n)
1 2
2 54
3 812
4 8580
5 70310
6 472626
7 2703512
8 13507416
9 60110030
10 241925530
11 891454124
12 3037849828
13 9654482474
14 28818500830
15 81289041680
16 217815522736
17 556959705302
18 1364497268946
19 3214138597460
20 7302195414780
21 16045139112002
22 34183012888134
23 70764981877592

[2,54,812,8580,70310,472626,2703512,13507416,
 60110030,241925530,891454124,3037849828,
 9654482474,28818500830,81289041680,217815522736,
 556959705302,1364497268946,3214138597460,
 7302195414780,16045139112002,34183012888134,
 70764981877592]

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Last modified May 26 18:08 EDT 2020. Contains 334630 sequences. (Running on oeis4.)