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A068703 as a simple table

na(n)
134543
21718191817
32324252423
43334353433
53940414039
67778797877
78788898887
8123124125124123
9153154155154153
10159160161160159
11173174175174173
12207208209208207
13227228229228227
14279280281280279

[34543,1718191817,2324252423,3334353433,
 3940414039,7778797877,8788898887,123124125124123,
 153154155154153,159160161160159,173174175174173,
 207208209208207,227228229228227,279280281280279]