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A060785 as a simple table

na(n)
20
312
454
5126
6228
7360
8522
9714
10936
111188
121470
131782
142124
152496
162898
173330
183792
194284
204806
215358
225940
236552
247194
257866
268568
279300
2810062
2910854
3011676
3112528
3213410
3314322
3415264
3516236
3617238
3718270
3819332
3920424
4021546
4122698
4223880
4325092
4426334

[0,12,54,126,228,360,522,714,936,1188,1470,1782,
 2124,2496,2898,3330,3792,4284,4806,5358,5940,6552,
 7194,7866,8568,9300,10062,10854,11676,12528,13410,
 14322,15264,16236,17238,18270,19332,20424,21546,
 22698,23880,25092,26334]