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A058561 as a simple table

n a(n)
0 0
1 1
2 3
3 12
4 78
5 708
6 8256
7 117624
8 1980096
9 38456736
10 846413472
11 20819693568
12 565998548352
13 16852047061632
14 545372109629184
15 19061178127458816
16 715541912895773184
17 28713061759257037824
18 1226513716981332031488

[0,1,3,12,78,708,8256,117624,1980096,38456736,
 846413472,20819693568,565998548352,16852047061632,
 545372109629184,19061178127458816,
 715541912895773184,28713061759257037824,
 1226513716981332031488]

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)