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A087397 as a simple table

na(n)
13
210
36
415
545
666
7120
8153
9231
10378
11435
12630
13780
14861
151035
161326
171653
181770
192145
202415
212556
223003
233321
243828
254560
264950
275151
285565
295778
306216
317875
328385
339180
349453
3510878
3611175
3712090
3813041
3913695
4014706
4115753
4216110
4317955
4418336

[3,10,6,15,45,66,120,153,231,378,435,630,780,861,
 1035,1326,1653,1770,2145,2415,2556,3003,3321,3828,
 4560,4950,5151,5565,5778,6216,7875,8385,9180,9453,
 10878,11175,12090,13041,13695,14706,15753,16110,
 17955,18336]