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A247975 as a simple table

na(n)
11
28
315479
430
529
668
751
82
973
1015
1139
1213
1312
1436
1510
1625
1733
188
1915
2038
2140
22108
2342
241
2516
2639
2731
2857
295
304
3127
322
3317
3451
3530
3614
3736
3820
3911
4021
4132
4223
4339
44689
4529
464
4727
481873
49184
507248
517
52153
53132
5476
5575
5618
5728
5899
592
6086

[1,8,15479,30,29,68,51,2,73,15,39,13,12,36,10,25,
 33,8,15,38,40,108,42,1,16,39,31,57,5,4,27,2,17,51,
 30,14,36,20,11,21,32,23,39,689,29,4,27,1873,184,
 7248,7,153,132,76,75,18,28,99,2,86]