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A267904
as a simple table
n
a(n)
1
0
2
30
3
138
4
17658
5
414138
6
28493946
7
1246334388
8
72638390592
9
3823498828854
10
218021286182580
[0,30,138,17658,414138,28493946,1246334388, 72638390592,3823498828854,218021286182580]
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Last modified March 27 05:46 EDT 2023. Contains 361554 sequences. (Running on oeis4.)