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A218030 as a simple table

n a(n)
1 2
2 5
3 54
4 648
5 2160
6 337169025526136832000
7 685506275314921762068267522458966662115416623590907309075726336000000
8 46641846972427276691124922228108091690332947069125333309512419901440000000000 

[2,5,54,648,2160,337169025526136832000,
 68550627531492176206826752245896666211541662359090\
 7309075726336000000,
 46641846972427276691124922228108091690332947069125\
 333309512419901440000000000]

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Last modified April 23 22:36 EDT 2024. Contains 371917 sequences. (Running on oeis4.)