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A225115
as a simple table
n
a(n)
1
3
2
15
3
120
4
528
5
4095
6
139128
7
160554240
8
812293020528
9
379188080252621270252095320
[3,15,120,528,4095,139128,160554240,812293020528, 379188080252621270252095320]
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Last modified August 4 17:08 EDT 2024. Contains 374923 sequences. (Running on oeis4.)