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A039741 as a simple table

n a(n)
1 1
2 4
3 28
4 216
5 1790
6 15587
7 140746
8 1305920
9 12374069
10 119223556
11 1164465225
12 11502924648
13 114721053058
14 1153539900783 

[1,4,28,216,1790,15587,140746,1305920,12374069,
 119223556,1164465225,11502924648,114721053058,
 1153539900783]

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Last modified April 24 08:59 EDT 2024. Contains 371935 sequences. (Running on oeis4.)