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A156502
as a simple table
n
a(n)
3
2
4
108
5
80
6
22640
7
182640
8
60084184
9
1377842504
10
1573982139776
[2,108,80,22640,182640,60084184,1377842504, 1573982139776]
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Last modified April 24 11:37 EDT 2024. Contains 371936 sequences. (Running on oeis4.)