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A373187 as a simple table

na(n)
11
24
310
421
535
656
784
8124
9165
10220
11286
12374
13455
14560
15680
16837
17969
181140
191330
201575
211771
222024
232300
242656
252925
263276
273654
284144
294495
304960
315456
326108
336545
347140
357770
368601
379139
389880
3910660
4011700
4112341
4213244
4314190
4415466
4516215
4617296
4718424

[1,4,10,21,35,56,84,124,165,220,286,374,455,560,
 680,837,969,1140,1330,1575,1771,2024,2300,2656,
 2925,3276,3654,4144,4495,4960,5456,6108,6545,7140,
 7770,8601,9139,9880,10660,11700,12341,13244,14190,
 15466,16215,17296,18424]