login

A033553 as a simple table

na(n)
19
215
321
433
539
651
757
863
969
1087
1193
12111
13123
14129
15141
16159
17177
18183
19195
20201
21213
22219
23237
24249
25267
26291
27303
28309
29315
30321
31327
32339
33381
34393
35399
36411
37417
38447
39453
40471
41489
42501
43519
44537
45543
46573
47579
48591
49597
50633
51669
52681
53687
54693
55699
56717
57723
58753
59771
60789
61807
62813
63819

[9,15,21,33,39,51,57,63,69,87,93,111,123,129,141,
 159,177,183,195,201,213,219,237,249,267,291,303,
 309,315,321,327,339,381,393,399,411,417,447,453,
 471,489,501,519,537,543,573,579,591,597,633,669,
 681,687,693,699,717,723,753,771,789,807,813,819]