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A140621 as a simple table

na(n)
173
297
3193
4457
5577
61033
71657
81753
92017
102113
112137
122377
132593
142953
153217
163313
173673
183697
194153
204297
214513
225233
235857
246073
256337
266793
277057
287417
297753
307873
317993
328353
338377
349433
359817
3610177
3710753
3810993
3911113
4011497

[73,97,193,457,577,1033,1657,1753,2017,2113,2137,
 2377,2593,2953,3217,3313,3673,3697,4153,4297,4513,
 5233,5857,6073,6337,6793,7057,7417,7753,7873,7993,
 8353,8377,9433,9817,10177,10753,10993,11113,11497]