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A047206 as a simple table

na(n)
11
23
34
46
58
69
711
813
914
1016
1118
1219
1321
1423
1524
1626
1728
1829
1931
2033
2134
2236
2338
2439
2541
2643
2744
2846
2948
3049
3151
3253
3354
3456
3558
3659
3761
3863
3964
4066
4168
4269
4371
4473
4574
4676
4778
4879
4981
5083
5184
5286
5388
5489
5591
5693
5794
5896
5998
6099
61101
62103
63104
64106
65108

[1,3,4,6,8,9,11,13,14,16,18,19,21,23,24,26,28,29,
 31,33,34,36,38,39,41,43,44,46,48,49,51,53,54,56,
 58,59,61,63,64,66,68,69,71,73,74,76,78,79,81,83,
 84,86,88,89,91,93,94,96,98,99,101,103,104,106,108]