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A304567 as a simple table

na(n)
11
24
315
428
520
615
7161
848
915
10540
1188
1215
131365
14140
1515
162896
17204
1815
195453
20280
2115
229416
23368
2415
2515225
26468
2715
2823380
29580
3015
3134441
32704
3315
3449028
35840
3615
3767821
38988
3915
4091560
411148
4215
43121045
441320
4515
46157136
471504
4815
49200753
501700

[1,4,15,28,20,15,161,48,15,540,88,15,1365,140,15,
 2896,204,15,5453,280,15,9416,368,15,15225,468,15,
 23380,580,15,34441,704,15,49028,840,15,67821,988,
 15,91560,1148,15,121045,1320,15,157136,1504,15,
 200753,1700]