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A062974 as a simple table

na(n)
12
23
34
46
57
68
710
812
914
1015
1116
1218
1320
1421
1522
1624
1726
1828
1930
2031
2133
2234
2335
2436
2538
2639
2740
2842
2944
3045
3146
3248
3350
3451
3552
3654
3755
3856
3957
4058
4160
4262
4363
4465
4566
4668
4769
4870
4972
5074
5175
5276
5377
5478
5580
5682
5784
5885
5986
6087
6188
6290
6391
6492
6593
6694
6795
6896
6998
7099
71100

[2,3,4,6,7,8,10,12,14,15,16,18,20,21,22,24,26,28,
 30,31,33,34,35,36,38,39,40,42,44,45,46,48,50,51,
 52,54,55,56,57,58,60,62,63,65,66,68,69,70,72,74,
 75,76,77,78,80,82,84,85,86,87,88,90,91,92,93,94,
 95,96,98,99,100]