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A070919 as a simple table

na(n)
11
27
37
419
57
649
77
837
919
1049
117
12133
137
1449
1549
1661
177
18133
197
20133
2149
2249
237
24259
2519
2649
2737
28133
297
30343
317
3291
3349
3449
3549
36361
377
3849
3949
40259
417
42343
437
44133
45133
4649
477
48427
4919
50133
5149
52133
537
54259
5549
56259
5749
5849
597
60931
617
6249
63133
64127
6549
66343
677
68133

[1,7,7,19,7,49,7,37,19,49,7,133,7,49,49,61,7,133,
 7,133,49,49,7,259,19,49,37,133,7,343,7,91,49,49,
 49,361,7,49,49,259,7,343,7,133,133,49,7,427,19,
 133,49,133,7,259,49,259,49,49,7,931,7,49,133,127,
 49,343,7,133]