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A226660 as a simple table

na(n)
21
35
47
55
611
717
813
997
1059
1119
1255
13233
1411
1573
1625
1729
1847
19215
2041
21103
22145
2331
2413
25119
26131
275
2847
2953
3067
3117
32337
33125
34115
35485
36133
37127
3849
39119
40191
41293
42133
4323
4479
45103
46191
47167
4891
49409
50329
51217
52109
53449
54241
55361
56353
571303
58239
59149
6073

[1,5,7,5,11,17,13,97,59,19,55,233,11,73,25,29,47,
 215,41,103,145,31,13,119,131,5,47,53,67,17,337,
 125,115,485,133,127,49,119,191,293,133,23,79,103,
 191,167,91,409,329,217,109,449,241,361,353,1303,
 239,149,73]