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A180223 as a simple table

na(n)
00
12
215
339
474
5120
6177
7245
8324
9414
10515
11627
12750
13884
141029
151185
161352
171530
181719
191919
202130
212352
222585
232829
243084
253350
263627
273915
284214
294524
304845
315177
325520
335874
346239
356615
367002
377400
387809
398229
408660

[0,2,15,39,74,120,177,245,324,414,515,627,750,884,
 1029,1185,1352,1530,1719,1919,2130,2352,2585,2829,
 3084,3350,3627,3915,4214,4524,4845,5177,5520,5874,
 6239,6615,7002,7400,7809,8229,8660]