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A002047 as a simple table

n a(n)
0 1
1 2
2 6
3 28
4 244
5 2544
6 35600
7 659632
8 15106128
9 425802176
10 14409526080
11 577386122880 

[1,2,6,28,244,2544,35600,659632,15106128,
 425802176,14409526080,577386122880]

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Last modified April 20 00:26 EDT 2024. Contains 371798 sequences. (Running on oeis4.)