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A156509
as a simple table
n
a(n)
2
2
3
12
4
390
5
12963
6
1881506
7
1336889688
8
9293294524192
9
249490585063875516
[2,12,390,12963,1881506,1336889688,9293294524192, 249490585063875516]
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Last modified April 17 23:23 EDT 2024. Contains 371767 sequences. (Running on oeis4.)
