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A177495 as a simple table

na(n)
13
27
397
46
519
638
731
823
913
1015
1189
1222
1329
1443
1517
1624
1783
1841
1919003
20580
2179
2242
231903
2458
2535
2637
2773
2836
2971
3049
31999969
3256
3367
3466
35145
3676
37411
38578
3961
4060
4159
42494
4351
44262
4555
46158
4753
4852
4957
50398
5115673
5269
531589
549946
5565
5688
5720940211
58366
59391

[3,7,97,6,19,38,31,23,13,15,89,22,29,43,17,24,83,
 41,19003,580,79,42,1903,58,35,37,73,36,71,49,
 999969,56,67,66,145,76,411,578,61,60,59,494,51,
 262,55,158,53,52,57,398,15673,69,1589,9946,65,88,
 20940211,366,391]