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A143206 as a simple table

na(n)
121
277
3221
4437
51517
62021
74757
86557
99797
1011021
1112317
1216637
1327221
1438021
1550621
1653357
1777837
1895477
1999221
20123197
21145157
22159197
23194477
24210677
25216221
26239117
27250997
28378221
29416021
30455621
31549077
32576077
33594437
34680621

[21,77,221,437,1517,2021,4757,6557,9797,11021,
 12317,16637,27221,38021,50621,53357,77837,95477,
 99221,123197,145157,159197,194477,210677,216221,
 239117,250997,378221,416021,455621,549077,576077,
 594437,680621]