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A006893 as a simple table

n a(n)
1 1
2 2
3 5
4 20
5 230
6 26795
7 359026205
8 64449908476890320
9 2076895351339769460477611370186680
10 2156747150208372213435450937462082366919951682912789656986079991220 

[1,2,5,20,230,26795,359026205,64449908476890320,
 2076895351339769460477611370186680,
 21567471502083722134354509374620823669199516829127\
 89656986079991220]

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Last modified August 18 07:06 EDT 2024. Contains 375255 sequences. (Running on oeis4.)