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A115246 as a simple table

n a(n)
1 0
2 0
3 27
4 288
5 2250
6 15795
7 105987
8 696864
9 4540968
10 29490750
11 191420427
12 1243565235
13 8091223647
14 52739879283
15 344402073027
16 2253045672480
17 14764068268068
18 96899123172708
19 636877933530303
20 4191430966219038
21 27617820628739718
22 182176855684869243

[0,0,27,288,2250,15795,105987,696864,4540968,
 29490750,191420427,1243565235,8091223647,
 52739879283,344402073027,2253045672480,
 14764068268068,96899123172708,636877933530303,
 4191430966219038,27617820628739718,
 182176855684869243]

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Last modified May 13 11:22 EDT 2024. Contains 372504 sequences. (Running on oeis4.)