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A268145 as a simple table

na(n)
1345
2567
3111213
4171819
5293031
6414243
7596061
8717273
9101102103
10107108109
11137138139
12149150151
13179180181
14191192193
15197198199
16227228229
17239240241
18269270271
19281282283
20311312313
21347348349
22419420421
23431432433
24461462463
25521522523
26569570571
27599600601

[345,567,111213,171819,293031,414243,596061,
 717273,101102103,107108109,137138139,149150151,
 179180181,191192193,197198199,227228229,239240241,
 269270271,281282283,311312313,347348349,419420421,
 431432433,461462463,521522523,569570571,599600601]