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A268526 as a simple table

na(n)
11
25
317
425
561
685
7109
8125
9233
10305
11377
12425
13497
14545
15593
16625
17949
181165
191381
201525
211741
221885
232029
242125
252341
262485
272629
282725
292869
302965
313061
323125
334097
344745
355393
365825
376473
386905
397337
407625
418273
428705
439137
449425
459857
4610145
4710433
4810625
4911273
5011705
5112137
5212425

[1,5,17,25,61,85,109,125,233,305,377,425,497,545,
 593,625,949,1165,1381,1525,1741,1885,2029,2125,
 2341,2485,2629,2725,2869,2965,3061,3125,4097,4745,
 5393,5825,6473,6905,7337,7625,8273,8705,9137,9425,
 9857,10145,10433,10625,11273,11705,12137,12425]