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A276967 as a simple table

na(n)
11
23
39
415
521
633
739
851
957
1063
1169
1287
1393
14111
15123
16129
17141
18159
19177
20183
21195
22201
23213
24219
25237
26249
27267
28291
29303
30309
31315
32321
33327
34339
35381
36393
37399
38411
39417
40447
41453
42471
43489
44501
45519
46537
47543
48573
49579
50591
51597
52633
53669
54681
55687
56693
57699
58717
59723
60731
61753
62771
63789
64807

[1,3,9,15,21,33,39,51,57,63,69,87,93,111,123,129,
 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,
 669,681,687,693,699,717,723,731,753,771,789,807]