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A049022 as a simple table

n a(n)
0 2
1 4
2 6
3 15
4 5005
5 23197529289205687077586038842122627336104000

[2,4,6,15,5005,
 23197529289205687077586038842122627336104000]

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Last modified May 17 19:47 EDT 2021. Contains 343988 sequences. (Running on oeis4.)