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A273685 as a simple table

na(n)
01
15
222
359
4120
5217
6341
7518
8746
91055
101392
111801
122293
132906
143534
154287
165147
176192
187240
198417
209765
2111330
2212882
2314587
2416503
2518628
2620864
2723281
2825921
2928870
3031770
3134947
3238419
3342192
3446044
3550093
3654441
3759166
3863890
3968875
4074119
4179708

[1,5,22,59,120,217,341,518,746,1055,1392,1801,
 2293,2906,3534,4287,5147,6192,7240,8417,9765,
 11330,12882,14587,16503,18628,20864,23281,25921,
 28870,31770,34947,38419,42192,46044,50093,54441,
 59166,63890,68875,74119,79708]