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A068412 as a simple table

na(n)
16
212
328
442
560
6168
7456
8496
9828
101080
111242
121530
131560
143360
153672
164560
177320
187584
198128
2011400
2114784
2219488
2321648
2433462
2537536
2640608
2744856
2848024
2959520
3083904
3187648
32221088
33352704
34354384
35560664
36613440
371288224
381365984
391420320
401482480

[6,12,28,42,60,168,456,496,828,1080,1242,1530,
 1560,3360,3672,4560,7320,7584,8128,11400,14784,
 19488,21648,33462,37536,40608,44856,48024,59520,
 83904,87648,221088,352704,354384,560664,613440,
 1288224,1365984,1420320,1482480]