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A173518 as a simple table

n a(n)
1 21
2 960540
3 16418498901144294337512360
4 436066841882071117095002459324085167366543342937477344818646196279385305441506861017701946929489111120 

[21,960540,16418498901144294337512360,
 43606684188207111709500245932408516736654334293747\
 73448186461962793853054415068610177019469294891111\
 20]

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Last modified April 23 15:20 EDT 2024. Contains 371916 sequences. (Running on oeis4.)