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A271101 as a simple table

na(n)
121
233
357
469
585
693
7129
8133
9145
10177
11205
12213
13217
14237
15249
16253
17265
18309
19393
20417
21445
22469
23489
24493
25505
26517
27553
28565
29573
30597
31633
32669
33685
34697
35753
36781
37793
38813
39817
40865
41889
42913
43933
44949
45973
46985
47993
481057
491077
501137
511149
521177
531257
541273
551285
561329

[21,33,57,69,85,93,129,133,145,177,205,213,217,
 237,249,253,265,309,393,417,445,469,489,493,505,
 517,553,565,573,597,633,669,685,697,753,781,793,
 813,817,865,889,913,933,949,973,985,993,1057,1077,
 1137,1149,1177,1257,1273,1285,1329]