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A119605 as a simple table

na(n)
11
22
33
45
56
67
78
89
910
1011
1113
1214
1315
1417
1519
1621
1722
1823
1925
2026
2127
2229
2331
2433
2534
2635
2737
2838
2939
3041
3143

[1,2,3,5,6,7,8,9,10,11,13,14,15,17,19,21,22,23,25,
 26,27,29,31,33,34,35,37,38,39,41,43]