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A294868 as a simple table

na(n)
01
12
25
312
424
542
667
7100
8142
9195
10260
11338
12430
13537
14660
15800
16958
171135
181332
191550
201791
212056
222346
232662
243005
253376
263776
274206
284667
295160
305686
316246
326841
337472
348140
358846
369591
3710377
3811205
3912076
4012991
4113951
4214957
4316010
4417111
4518261

[1,2,5,12,24,42,67,100,142,195,260,338,430,537,
 660,800,958,1135,1332,1550,1791,2056,2346,2662,
 3005,3376,3776,4206,4667,5160,5686,6246,6841,7472,
 8140,8846,9591,10377,11205,12076,12991,13951,
 14957,16010,17111,18261]