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A028915 as a simple table

na(n)
249
357
435
57
624
749
838
949
1057
1151
1240
1355
1424
157
1633
1757
1832
1954
2012
2123
227
2315
2438
2554
2627
2710
281
2938
3049
3159
329
3333
3415
3524
3661
3735
3830
391
4054
417
4216
4343
4425
4512
4639
4756
487
4941
5057
5149
5260
5343
5413
5551
5619
5738
581
5940
606
6149
6254
6354
645
653
6617
6754
6814
6946
7024
7149

[49,57,35,7,24,49,38,49,57,51,40,55,24,7,33,57,32,
 54,12,23,7,15,38,54,27,10,1,38,49,59,9,33,15,24,
 61,35,30,1,54,7,16,43,25,12,39,56,7,41,57,49,60,
 43,13,51,19,38,1,40,6,49,54,54,5,3,17,54,14,46,24,
 49]