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A006487 as a simple table

n a(n)
0 1
1 3
2 13
3 253
4 218201
5 61323543802
6 5704059172637470075854
7 178059816815203395552917056787722451335939040
8 227569456678536847041583520060628448125647436561262746582115170178319521793841532532509636 

[1,3,13,253,218201,61323543802,
 5704059172637470075854,
 178059816815203395552917056787722451335939040,
 22756945667853684704158352006062844812564743656126\
 2746582115170178319521793841532532509636]

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Last modified April 23 18:16 EDT 2024. Contains 371916 sequences. (Running on oeis4.)