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A168388 as a simple table

na(n)
11
23
35
413
521
639
757
889
9121
10171
11221
12293
13365
14463
15561
16689
17817
18979
191141
201341
211541
221783
232025
242313
252601
262939
273277
283669
294061
304511
314961
325473
335985
346563
357141
367789
378437
389159
399881
4010681
4111481
4212363
4313245
4414213
4515181
4616239
4717297

[1,3,5,13,21,39,57,89,121,171,221,293,365,463,561,
 689,817,979,1141,1341,1541,1783,2025,2313,2601,
 2939,3277,3669,4061,4511,4961,5473,5985,6563,7141,
 7789,8437,9159,9881,10681,11481,12363,13245,14213,
 15181,16239,17297]