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A285977 as a simple table

na(n)
12
23
35
47
58
610
712
813
915
1017
1119
1220
1322
1423
1525
1627
1728
1830
1932
2033
2135
2236
2338
2440
2542
2643
2745
2847
2948
3050
3152
3253
3355
3457
3559
3660
3762
3863
3965
4067
4169
4270
4372
4474
4575
4677
4779
4880
4982
5083
5185
5287
5388
5490
5592
5693
5795
5897
5999
60100
61102
62103
63105
64107

[2,3,5,7,8,10,12,13,15,17,19,20,22,23,25,27,28,30,
 32,33,35,36,38,40,42,43,45,47,48,50,52,53,55,57,
 59,60,62,63,65,67,69,70,72,74,75,77,79,80,82,83,
 85,87,88,90,92,93,95,97,99,100,102,103,105,107]