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A089786 as a simple table

na(n)
173
2197
37129
410141
515161
619379
7271109
8373157
9593251
10757331
11983431
12997433
131069463
141231547
151361599
161531661
171571683
181627727
191831811
202069911
212161967
222213977
2324731093
2425311103
2526931193
2627131213
2727911237
2828191259

[73,197,7129,10141,15161,19379,271109,373157,
 593251,757331,983431,997433,1069463,1231547,
 1361599,1531661,1571683,1627727,1831811,2069911,
 2161967,2213977,24731093,25311103,26931193,
 27131213,27911237,28191259]