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A099979 as a simple table

na(n)
15
221
350
485
5130
6210
7250
8341
9455
10546
11610
12850
13850
141050
151300
161365
171450
181911
191810
202210
212500
222562
232650
243410
253255
263570
274100
284250
294210
305460
314810
325461
336100
346090
356500
367735
376850
387602
398500
408866
418410
4210500
439250
4410370

[5,21,50,85,130,210,250,341,455,546,610,850,850,
 1050,1300,1365,1450,1911,1810,2210,2500,2562,2650,
 3410,3255,3570,4100,4250,4210,5460,4810,5461,6100,
 6090,6500,7735,6850,7602,8500,8866,8410,10500,
 9250,10370]