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A170388 as a simple table

na(n)
01
143
21806
375852
43185784
5133802928
65619722976
7236028364992
89913191329664
9416354035845888
1017486869505527296
11734448519232146432
1230846837807750150144
131295567187925506306048
1454413821892871264854016

[1,43,1806,75852,3185784,133802928,5619722976,
 236028364992,9913191329664,416354035845888,
 17486869505527296,734448519232146432,
 30846837807750150144,1295567187925506306048,
 54413821892871264854016]