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A284288 as a simple table

na(n)
12
23
34
45
57
69
711
813
917
1019
1123
1225
1327
1428
1529
1631
1737
1841
1943
2047
2149
2253
2354
2456
2559
2661
2764
2867
2968
3071
3173
3279
3381
3483
3589
3691
3797
3898
3999
40100
41101
42103
43107
44109
45113
46121
47127
48131
49133
50137
51138
52139
53148
54149
55151
56154
57157
58163
59165
60167
61169
62173
63179
64181
65188
66191
67192
68193
69197
70199

[2,3,4,5,7,9,11,13,17,19,23,25,27,28,29,31,37,41,
 43,47,49,53,54,56,59,61,64,67,68,71,73,79,81,83,
 89,91,97,98,99,100,101,103,107,109,113,121,127,
 131,133,137,138,139,148,149,151,154,157,163,165,
 167,169,173,179,181,188,191,192,193,197,199]