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A063409 as a simple table

na(n)
10
20
3112
433600
517387776
625992336384
782647777759232
8833357980338831360
928526490693606372081664
103614600380702981731403431936
111544913993707932218852890836467712

[0,0,112,33600,17387776,25992336384,
 82647777759232,833357980338831360,
 28526490693606372081664,
 3614600380702981731403431936,
 1544913993707932218852890836467712]