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A191131 as a simple table

na(n)
11
23
37
49
515
621
727
831
939
1045
1163
1281
1387
1493
15111
16117
17127
18135
19159
20183
21189
22243
23255
24261
25279
26327
27333
28351
29375
30381
31405
32447
33471
34477
35511
36543
37549
38567
39639
40729
41735
42759
43765
44783
45837
46975
47981
48999
491023
501047
511053
521119
531125
541143
551215
561311
571335
581341
591407
601413
611431
621503
631527
641533
651623

[1,3,7,9,15,21,27,31,39,45,63,81,87,93,111,117,
 127,135,159,183,189,243,255,261,279,327,333,351,
 375,381,405,447,471,477,511,543,549,567,639,729,
 735,759,765,783,837,975,981,999,1023,1047,1053,
 1119,1125,1143,1215,1311,1335,1341,1407,1413,1431,
 1503,1527,1533,1623]