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A090271 as a simple table

na(n)
111
2313
3727
4919
511311
633533
777377
81114111
91212121
101311131
111411141
121513151
131611161
141712171
151917191
163135313
173233323
183331333
193439343
203635363
213732373
223836383
233931393
247073707
257177717
267276727
277472747

[11,313,727,919,11311,33533,77377,1114111,1212121,
 1311131,1411141,1513151,1611161,1712171,1917191,
 3135313,3233323,3331333,3439343,3635363,3732373,
 3836383,3931393,7073707,7177717,7276727,7472747]