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A061783 as a simple table

na(n)
1229
2239
3241
4257
5269
6271
7277
8281
9439
10443
11463
12467
13479
14499
15613
16641
17653
18661
19673
20677
21683
22691
23811
24823
25839
26863
27881
2820011
2920029
3020047
3120051
3220101
3320161
3420201
3520249
3620269
3720347
3820389
3920399
4020441
4120477
4220479
4320507

[229,239,241,257,269,271,277,281,439,443,463,467,
 479,499,613,641,653,661,673,677,683,691,811,823,
 839,863,881,20011,20029,20047,20051,20101,20161,
 20201,20249,20269,20347,20389,20399,20441,20477,
 20479,20507]