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A193297 as a simple table

na(n)
21
33
47
512
628
765
850
9140
10325
11811
12225
13700
141950
154866
1612762
171092
183675
1911375
2034062
2189334
22244588
235684
2420384
2568250
26227080
27714672
281956704
295574956
3031572
31119364
32425880
331532790
345360040
3517610336
3650174604
37148332645

[1,3,7,12,28,65,50,140,325,811,225,700,1950,4866,
 12762,1092,3675,11375,34062,89334,244588,5684,
 20384,68250,227080,714672,1956704,5574956,31572,
 119364,425880,1532790,5360040,17610336,50174604,
 148332645]