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A233989 as a simple table

na(n)
156
2236
3236
4976
51540
6976
74064
89632
99632
104064
1116880
1262040
1392320
1462040
1516880
1670176
17393396
18914000
19914000
20393396
2170176
22291648
232520604
248950496
2514319916
268950496
272520604
28291648
291212224
3016042420
3188388464
32218943540

[56,236,236,976,1540,976,4064,9632,9632,4064,
 16880,62040,92320,62040,16880,70176,393396,914000,
 914000,393396,70176,291648,2520604,8950496,
 14319916,8950496,2520604,291648,1212224,16042420,
 88388464,218943540]