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A031331 as a simple table

na(n)
125
243
345
451
559
663
765
880
9105
10107
11135
12159
13161
14168
15179
16188
17195
18227
19250
20253
21268
22270
23278
24301
25309
26311
27326
28344
29351
30353
31360
32369
33375
34403
35418
36433
37448
38450
39457
40493
41504
42505
43511
44535
45559
46563
47581

[25,43,45,51,59,63,65,80,105,107,135,159,161,168,
 179,188,195,227,250,253,268,270,278,301,309,311,
 326,344,351,353,360,369,375,403,418,433,448,450,
 457,493,504,505,511,535,559,563,581]