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A280680 as a simple table

na(n)
16
23
32
412
54
63
715
810
96
1020
115
124
1328
1421
1512
1630
176
185
1935
2014
2110
2240
2324
2415
2542
267
276
2845
2936
3020
3156
328
337
3463
3518
3614
3766
3855
3930
4070
4130
4221
4372
449
458
4677
4744
4828
4984
5060
5135
5288
5333
5424
5590
5610
579
5891
5978
6042
6199
6222
6318
64104
6565
6640

[6,3,2,12,4,3,15,10,6,20,5,4,28,21,12,30,6,5,35,
 14,10,40,24,15,42,7,6,45,36,20,56,8,7,63,18,14,66,
 55,30,70,30,21,72,9,8,77,44,28,84,60,35,88,33,24,
 90,10,9,91,78,42,99,22,18,104,65,40]