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A006049 as a simple table

na(n)
12
23
34
47
58
614
716
820
921
1031
1133
1234
1335
1438
1539
1644
1745
1850
1951
2054
2155
2256
2357
2462
2568
2674
2775
2876
2985
3086
3187
3291
3392
3493
3594
3695
3798
3899
39111
40115
41116
42117
43118
44122
45123
46127
47133
48134
49135
50141
51142
52143
53144
54145
55146
56147
57152
58158
59159
60160
61161
62171
63175

[2,3,4,7,8,14,16,20,21,31,33,34,35,38,39,44,45,50,
 51,54,55,56,57,62,68,74,75,76,85,86,87,91,92,93,
 94,95,98,99,111,115,116,117,118,122,123,127,133,
 134,135,141,142,143,144,145,146,147,152,158,159,
 160,161,171,175]