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A222028 as a simple table

na(n)
12
24
38
415
528
641
766
892
9132
10175
11232
12287
13360
14475
15570
16727
17852
181009
191220
201397
211646
221891
232154
242441
252772
263121
273508
283891
294334
304791
315282
325797
336376
346983
357618
368285
378984
389713
3910500
4011319
4112182
4213093
4314028
4415023
4516064
4617157
4718276
4819447
4920680
5021953

[2,4,8,15,28,41,66,92,132,175,232,287,360,475,570,
 727,852,1009,1220,1397,1646,1891,2154,2441,2772,
 3121,3508,3891,4334,4791,5282,5797,6376,6983,7618,
 8285,8984,9713,10500,11319,12182,13093,14028,
 15023,16064,17157,18276,19447,20680,21953]