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A284448 as a simple table

na(n)
10
20
3102
43384
54190874
63177012844
745913351929099
8746140228341333064
9140666601117969492988244

[0,0,102,3384,4190874,3177012844,45913351929099,
 746140228341333064,140666601117969492988244]