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A207406 as a simple table

na(n)
112
2144
3636
42809
58692
626896
768060
8172225
9380970
10842724
111690038
123389281
136303584
1411723776
1520533728
1635964009
1759970000
18100000000
19160050000
20256160025
21395963700
22612067600
23918225100
241377523225
252013488750

[12,144,636,2809,8692,26896,68060,172225,380970,
 842724,1690038,3389281,6303584,11723776,20533728,
 35964009,59970000,100000000,160050000,256160025,
 395963700,612067600,918225100,1377523225,
 2013488750]