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A352666 as a simple table

na(n)
10
20
30
41
54
610
720
840
970
10112
11176
12261
13372
14520
15704
16935
171220
181560
191976
202464
213038
223710
234480
245376
256392
267548
278856
2810320
2911970
3013800
3115840
3218095
3320580
3423320
3526312
3629601
3733176
3837072
3941300
4045875
4150830
4256160
4361920
4468096
4574732

[0,0,0,1,4,10,20,40,70,112,176,261,372,520,704,
 935,1220,1560,1976,2464,3038,3710,4480,5376,6392,
 7548,8856,10320,11970,13800,15840,18095,20580,
 23320,26312,29601,33176,37072,41300,45875,50830,
 56160,61920,68096,74732]