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A157988 as a simple table

na(n)
465760
47270720
4812994560
49636733440
5031836672000
511623670272000
5284430854144000
534474835269632000
54241641104560128000
5513290260750807040000
56744254602045194240000
5742422512316576071680000

[5760,270720,12994560,636733440,31836672000,
 1623670272000,84430854144000,4474835269632000,
 241641104560128000,13290260750807040000,
 744254602045194240000,42422512316576071680000]