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A299269 as a simple table

na(n)
01
17
225
373
4151
5277
6459
7699
81029
91419
101941
112517
123275
134073
145111
156167
167529
178879
1810609
1912289
2014431
2116477
2219075
2321523
2424621
2527507
2631149
2734509
2838739
2942609
3047471
3151887
3257425
3362423
3468681
3574297
3681319
3787589
3895419
39102379
40111061

[1,7,25,73,151,277,459,699,1029,1419,1941,2517,
 3275,4073,5111,6167,7529,8879,10609,12289,14431,
 16477,19075,21523,24621,27507,31149,34509,38739,
 42609,47471,51887,57425,62423,68681,74297,81319,
 87589,95419,102379,111061]