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A057088 as a simple table

n a(n)
0 1
1 5
2 30
3 175
4 1025
5 6000
6 35125
7 205625
8 1203750
9 7046875
10 41253125
11 241500000
12 1413765625
13 8276328125
14 48450468750
15 283633984375
16 1660422265625
17 9720281250000
18 56903517578125
19 333118994140625
20 1950112558593750
21 11416157763671875
22 66831351611328125
23 391237546875000000

[1,5,30,175,1025,6000,35125,205625,1203750,
 7046875,41253125,241500000,1413765625,8276328125,
 48450468750,283633984375,1660422265625,
 9720281250000,56903517578125,333118994140625,
 1950112558593750,11416157763671875,
 66831351611328125,391237546875000000]

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Last modified March 18 12:10 EDT 2019. Contains 321283 sequences. (Running on oeis4.)