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A157476 as a simple table

na(n)
12177
28449
318817
433281
551841
674497
7101249
8132097
9167041
10206081
11249217
12296449
13347777
14403201
15462721
16526337
17594049
18665857
19741761
20821761
21905857
22994049
231086337
241182721
251283201
261387777
271496449
281609217
291726081
301847041

[2177,8449,18817,33281,51841,74497,101249,132097,
 167041,206081,249217,296449,347777,403201,462721,
 526337,594049,665857,741761,821761,905857,994049,
 1086337,1182721,1283201,1387777,1496449,1609217,
 1726081,1847041]