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A061189 as a simple table

na(n)
01
12
20
3-10
415
525
630
7475
8450
9125
106000
118500
126250
135000
141250
1596000
16146250
17189375
18159375
1965625
209375
21180000
225355000
238881250
245578125
252515625
26721875
2778125
2844100000
29254700000
30341775000

[1,2,0,-10,15,25,30,475,450,125,6000,8500,6250,
 5000,1250,96000,146250,189375,159375,65625,9375,
 180000,5355000,8881250,5578125,2515625,721875,
 78125,44100000,254700000,341775000]