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A275560 as a simple table

na(n)
13
236
3126
4504
51872
67200
727360
8104256
9397440
101513728
115769216
1221980160
1383755008
14319131648
151215995904
164633362432
1717654611968
1867270017024
19256320995328
20976668327936
213721430827008
2214179888005120
2354030086701056

[3,36,126,504,1872,7200,27360,104256,397440,
 1513728,5769216,21980160,83755008,319131648,
 1215995904,4633362432,17654611968,67270017024,
 256320995328,976668327936,3721430827008,
 14179888005120,54030086701056]