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A170375 as a simple table

na(n)
01
130
2870
325230
4731670
521218430
6615334470
717844699630
8517496289270
915007392388830
10435214379276070
1112621216999006030
12366015292971174870
1310614443496164071230
14307818861388758065670
158926746980273983904430

[1,30,870,25230,731670,21218430,615334470,
 17844699630,517496289270,15007392388830,
 435214379276070,12621216999006030,
 366015292971174870,10614443496164071230,
 307818861388758065670,8926746980273983904430]