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A221048 as a simple table

na(n)
121
239
355
457
593
6111
7129
8155
9183
10201
11203
12205
13219
14237
15253
16291
17301
18305
19309
20327
21355
22381
23417
24453
25471
26489
27497
28505
29543
30579
31597
32633
33655
34669
35687
36689
37723
38737
39755
40791
41813
42831
43849
44889
45905
46921
47939
48955
49979
50993
511011
521027
531047

[21,39,55,57,93,111,129,155,183,201,203,205,219,
 237,253,291,301,305,309,327,355,381,417,453,471,
 489,497,505,543,579,597,633,655,669,687,689,723,
 737,755,791,813,831,849,889,905,921,939,955,979,
 993,1011,1027,1047]