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A271400 as a simple table

n a(n)
1 0
2 0
3 8
4 216
5 6048
6 203256
7 8627472
8 475098048
9 34505348760
10 3341298530016
11 434656549010376
12 76372500634028280
13 18198479103071529600
14 5898858710813046614376
15 2607147775322232410982384

[0,0,8,216,6048,203256,8627472,475098048,
 34505348760,3341298530016,434656549010376,
 76372500634028280,18198479103071529600,
 5898858710813046614376,2607147775322232410982384]

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Last modified September 27 21:12 EDT 2021. Contains 347698 sequences. (Running on oeis4.)