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A093981 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 4
6 140
7 2403
8 33593
9 410754
10 4627165
11 49484726
12 511589763
13 5167085638
14 51359117940
15 504751212449
16 4920758221226
17 47694473239363
18 460356869024451

[0,0,0,0,4,140,2403,33593,410754,4627165,49484726,
 511589763,5167085638,51359117940,504751212449,
 4920758221226,47694473239363,460356869024451]

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Last modified March 28 21:57 EDT 2024. Contains 371254 sequences. (Running on oeis4.)