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A034904 as a simple table

na(n)
11
228
3980
437730
51531838
664337196
72766499428
8121034349975
95365856182225
10240390356963680
1110861273400995360
12494187939745288880
1322618601857572837200
141040455685448350511200
1548069052667713793617440

[1,28,980,37730,1531838,64337196,2766499428,
 121034349975,5365856182225,240390356963680,
 10861273400995360,494187939745288880,
 22618601857572837200,1040455685448350511200,
 48069052667713793617440]