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A098991 as a simple table

na(n)
15
29
313
415
521
627
733
835
937
1039
1150
1255
1357
1461
1565
1673
1791
1893
1995
20111
21114
22115
23121
24122
25133
26141
27143
28145
29147
30155
31157
32170
33177
34183
35185
36189
37193
38195
39201
40205
41209
42213
43215
44217
45219
46231
47235
48247
49253
50259
51261
52277
53285
54295
55299
56301
57313

[5,9,13,15,21,27,33,35,37,39,50,55,57,61,65,73,91,
 93,95,111,114,115,121,122,133,141,143,145,147,155,
 157,170,177,183,185,189,193,195,201,205,209,213,
 215,217,219,231,235,247,253,259,261,277,285,295,
 299,301,313]