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A000857 as a simple table

n a(n)
1 4
2 74
3 63440
4 244728561176
5 13754897546985740953546112
6 181629101139670580935062344094172140654053010592464896 

[4,74,63440,244728561176,
 13754897546985740953546112,
 18162910113967058093506234409417214065405301059246\
 4896]

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Last modified August 22 12:59 EDT 2024. Contains 375369 sequences. (Running on oeis4.)