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A187173 as a simple table

na(n)
10
20
30
416
560
6128
7220
8336
9476
10640
11828
121040
131276
141536
151820
162128
172460
182816
193196
203600
214028
224480
234956
245456
255980
266528
277100
287696
298316
308960
319628
3210320
3311036
3411776
3512540
3613328
3714140
3814976
3915836
4016720
4117628
4218560
4319516
4420496

[0,0,0,16,60,128,220,336,476,640,828,1040,1276,
 1536,1820,2128,2460,2816,3196,3600,4028,4480,4956,
 5456,5980,6528,7100,7696,8316,8960,9628,10320,
 11036,11776,12540,13328,14140,14976,15836,16720,
 17628,18560,19516,20496]