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A275276 as a simple table

na(n)
16
27
34
47
513
619
719
843
929
1023
1143
1217
1367
1443
1571
1689
17239
1847
19197
20151
2143
22139
23197
24191
25239
26191
27173
28197
2947
3097
31223
32373
3371
34439
35307
36263
37157
38241
39199
40233
41337
42131
43179
44149
45113
46277
47269
48409
49197
50193
51379
52271
53181
54419
55367
56701
57751

[6,7,4,7,13,19,19,43,29,23,43,17,67,43,71,89,239,
 47,197,151,43,139,197,191,239,191,173,197,47,97,
 223,373,71,439,307,263,157,241,199,233,337,131,
 179,149,113,277,269,409,197,193,379,271,181,419,
 367,701,751]