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A213049 as a simple table

na(n)
15
237
373
4101
5109
6197
7257
8577
9601
10641
11677
12727
131601
141801
152593
163137
173389
183457
194057
204357
215477
228101
238837
2410369
2514401
2614407
2716901
2817957
2918253
3018433
3120809
3221317
3322501
3425601
3530977
3633857
3737447
3842437
3944101
4047629
4147653
4250177

[5,37,73,101,109,197,257,577,601,641,677,727,1601,
 1801,2593,3137,3389,3457,4057,4357,5477,8101,8837,
 10369,14401,14407,16901,17957,18253,18433,20809,
 21317,22501,25601,30977,33857,37447,42437,44101,
 47629,47653,50177]