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A334285 as a simple table

na(n)
16
2210
3420
46720
549140
6196560
74914000
891400400
9348107760
104765400640
1117057280240
1268229120960

[6,210,420,6720,49140,196560,4914000,91400400,
 348107760,4765400640,17057280240,68229120960]