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A209991 as a simple table

na(n)
01
113
238
379
4136
5209
6302
7407
8536
9681
10846
111015
121240
131441
141678
151951
162240
172505
182854
193151
203552
213945
224326
234687
245216
255657
266110
276615
287192
297649
308342
318831
329472
3310105
3410702
3511407
3612272
3712857
3813526
3914279
4015224

[1,13,38,79,136,209,302,407,536,681,846,1015,1240,
 1441,1678,1951,2240,2505,2854,3151,3552,3945,4326,
 4687,5216,5657,6110,6615,7192,7649,8342,8831,9472,
 10105,10702,11407,12272,12857,13526,14279,15224]