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A047516 as a simple table

na(n)
11
23
34
46
57
69
711
812
914
1015
1117
1219
1320
1422
1523
1625
1727
1828
1930
2031
2133
2235
2336
2438
2539
2641
2743
2844
2946
3047
3149
3251
3352
3454
3555
3657
3759
3860
3962
4063
4165
4267
4368
4470
4571
4673
4775
4876
4978
5079
5181
5283
5384
5486
5587
5689
5791
5892
5994
6095
6197
6299
63100
64102
65103
66105

[1,3,4,6,7,9,11,12,14,15,17,19,20,22,23,25,27,28,
 30,31,33,35,36,38,39,41,43,44,46,47,49,51,52,54,
 55,57,59,60,62,63,65,67,68,70,71,73,75,76,78,79,
 81,83,84,86,87,89,91,92,94,95,97,99,100,102,103,
 105]