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A189155 as a simple table

n a(n)
1 8
2 64
3 512
4 3375
5 21952
6 140608
7 884736
8 5545233
9 34645976
10 216000000
11 1345572864
12 8377795791
13 52145952256
14 324525966848
15 2019487744000
16 12566456507249
17 78194107594728
18 486552055503808
19 3027480871826944
20 18837870152811039

[8,64,512,3375,21952,140608,884736,5545233,
 34645976,216000000,1345572864,8377795791,
 52145952256,324525966848,2019487744000,
 12566456507249,78194107594728,486552055503808,
 3027480871826944,18837870152811039]

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Last modified December 1 02:41 EST 2021. Contains 349426 sequences. (Running on oeis4.)