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A069988 as a simple table

n a(n)
1 0
2 1
3 8
4 135
5 3386
6 120469
7 5767884
8 357666403
9 27886211102
10 2670067220337
11 308003491726640
12 42129829536116671
13 6742323657098884098
14 1248097176923675241805
15 264614795104954119229076

[0,1,8,135,3386,120469,5767884,357666403,
 27886211102,2670067220337,308003491726640,
 42129829536116671,6742323657098884098,
 1248097176923675241805,264614795104954119229076]

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Last modified June 18 20:04 EDT 2021. Contains 345121 sequences. (Running on oeis4.)