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A221658
as a simple table
n
a(n)
1
0
2
40
3
2594
4
233781
5
17254611
6
1312503181
7
99007036296
8
7489842900854
[0,40,2594,233781,17254611,1312503181,99007036296, 7489842900854]
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Last modified April 24 11:01 EDT 2024. Contains 371936 sequences. (Running on oeis4.)
