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A047058 as a simple table

na(n)
01
16
272
31296
431104
5933120
633592320
71410877440
867722117120
93656994324480
10219419659468800
1114481697524940800
121042682221795737600
1381329213300067532800
146831653917205672755200
15614848852548510547968000

[1,6,72,1296,31104,933120,33592320,1410877440,
 67722117120,3656994324480,219419659468800,
 14481697524940800,1042682221795737600,
 81329213300067532800,6831653917205672755200,
 614848852548510547968000]