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A006281 as a simple table

n a(n)
0 0
1 3
2 2
3 18
4 98
5 33282
6 319994402
7 354455304050635218
8 36294953231792713902640647988908098

[0,3,2,18,98,33282,319994402,354455304050635218,
 36294953231792713902640647988908098]

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Last modified April 25 16:45 EDT 2024. Contains 371989 sequences. (Running on oeis4.)