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A164520 as a simple table

na(n)
1274627
2328511
31860869
42146691
52924209
69129331
79938377
810503461
915438251
1024642173
1126730901
1228372627
1339651823
1461629877
15105823819
16125751503
17136590877
18151419439
19194104541
20426957779
21573856193

[274627,328511,1860869,2146691,2924209,9129331,
 9938377,10503461,15438251,24642173,26730901,
 28372627,39651823,61629877,105823819,125751503,
 136590877,151419439,194104541,426957779,573856193]