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A273336 as a simple table

na(n)
01
15
222
370
4150
5270
6438
7662
8950
91310
101750
112278
122902
133630
144470
155430
166518
177742
189110
1910630
2012310
2114158
2216182
2318390
2420790
2523390
2626198
2729222
2832470
2935950
3039670
3143638
3247862
3352350
3457110
3562150
3667478
3773102
3879030
3985270
4091830
4198718

[1,5,22,70,150,270,438,662,950,1310,1750,2278,
 2902,3630,4470,5430,6518,7742,9110,10630,12310,
 14158,16182,18390,20790,23390,26198,29222,32470,
 35950,39670,43638,47862,52350,57110,62150,67478,
 73102,79030,85270,91830,98718]