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A124073 as a simple table

na(n)
10
20
31824
43662976
518743463360
6206032439164800
74316868116405748960
8157846181105000772889344
99416135162778291726755147136
10869099332136838873667455070091520
11118924204222864960529120670496333629600
1223292190275693669075772234927951426886017920

[0,0,1824,3662976,18743463360,206032439164800,
 4316868116405748960,157846181105000772889344,
 9416135162778291726755147136,
 869099332136838873667455070091520,
 118924204222864960529120670496333629600,
 23292190275693669075772234927951426886017920]