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A257688 as a simple table

na(n)
11
22
33
45
57
611
713
817
919
1023
1125
1229
1331
1437
1541
1643
1747
1853
1955
2059
2161
2267
2371
2473
2579
2683
2787
2889
2991
3097
31101
32103
33107
34109
35113
36115
37117
38127
39131
40137
41139
42143
43145
44149
45151
46157
47163
48167
49171
50173
51179
52181
53185
54191
55193
56197
57199
58203
59211
60213
61223
62227
63229
64233
65239
66241
67247
68251
69253
70257
71263
72269

[1,2,3,5,7,11,13,17,19,23,25,29,31,37,41,43,47,53,
 55,59,61,67,71,73,79,83,87,89,91,97,101,103,107,
 109,113,115,117,127,131,137,139,143,145,149,151,
 157,163,167,171,173,179,181,185,191,193,197,199,
 203,211,213,223,227,229,233,239,241,247,251,253,
 257,263,269]