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A055452 as a simple table

na(n)
21
33
45
519
675
7305
81270
95390
1023236
11101480
12448085
131997115
148973255
1540602093
16184853055
17846206025
183892585325
1917984308775
2083417287855
21388297304825
221813341109825
238493372326675
2439889629750600

[1,3,5,19,75,305,1270,5390,23236,101480,448085,
 1997115,8973255,40602093,184853055,846206025,
 3892585325,17984308775,83417287855,388297304825,
 1813341109825,8493372326675,39889629750600]