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A215233 as a simple table

na(n)
15
237
3677
41601
58837
633857
7122501
8246017
911492101
1012503297
112058436901
126844914757
139813676097
14127566122897
15707119537217
1615058714869137
17779243651884097
181641669426950401
1910965274367622437
201269017804759665217
214346851918104880901

[5,37,677,1601,8837,33857,122501,246017,11492101,
 12503297,2058436901,6844914757,9813676097,
 127566122897,707119537217,15058714869137,
 779243651884097,1641669426950401,
 10965274367622437,1269017804759665217,
 4346851918104880901]