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A329066 as a simple table

na(n)
01
14
21
336
412
51
6400
7588
820
91
104900
1149440
122100
1328
141
1563504
165187980
17423440
184956
1936
201
21853776
22597027312
23117234740
241751680
259540
2644
271
2811778624
2971962945824
3036938855520
31907687900
325101200
3316236
3452
351

[1,4,1,36,12,1,400,588,20,1,4900,49440,2100,28,1,
 63504,5187980,423440,4956,36,1,853776,597027312,
 117234740,1751680,9540,44,1,11778624,71962945824,
 36938855520,907687900,5101200,16236,52,1]