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A172684 as a simple table

na(n)
12520
2545007960
3250071339672000
4163081394186253543000
5130096688857163908226867520
6118274738663434470504494036529600
7117847210656873992022720603629873856000

[2520,545007960,250071339672000,
 163081394186253543000,130096688857163908226867520,
 118274738663434470504494036529600,
 117847210656873992022720603629873856000]