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A068964 as a simple table

na(n)
12
25
324
449
587
6182
7307
8379
9458
10677
111618
122427
134397
144944
155969
166496
178871
189526
1911580
2013063
2116243
2217970
2318400
2420225
2525271
2628275
2737730
2842387
2946597
3048681
3150329
3256586
3358859
3461930
3564289
3665078
3770776
3878360
3980133
4083638
4183640
42115956
43118712

[2,5,24,49,87,182,307,379,458,677,1618,2427,4397,
 4944,5969,6496,8871,9526,11580,13063,16243,17970,
 18400,20225,25271,28275,37730,42387,46597,48681,
 50329,56586,58859,61930,64289,65078,70776,78360,
 80133,83638,83640,115956,118712]