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A000757 as a simple table

n a(n)
0 1
1 0
2 0
3 1
4 1
5 8
6 36
7 229
8 1625
9 13208
10 120288
11 1214673
12 13469897
13 162744944
14 2128047988
15 29943053061
16 451123462673
17 7245940789072
18 123604151490592
19 2231697509543361
20 42519034050101745
21 852495597142800376

[1,0,0,1,1,8,36,229,1625,13208,120288,1214673,
 13469897,162744944,2128047988,29943053061,
 451123462673,7245940789072,123604151490592,
 2231697509543361,42519034050101745,
 852495597142800376]

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)