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A118679 as a simple table

na(n)
11
22
31
413
519
613
717
843
953
101
1119
1289
13103
1459
1567
16151
1713
1847
191
20229
21251
22137
23149
241
25349
2647
27101
28433
29463
301
31263
3243
33593
34157
3583
36701
37739
38389
39409
40859
4153
4259
431
441033
4583
46563
47587
481223
4967
50331
511
521429
531483
54769
55797
56127
571709
581
59457
601889

[1,2,1,13,19,13,17,43,53,1,19,89,103,59,67,151,13,
 47,1,229,251,137,149,1,349,47,101,433,463,1,263,
 43,593,157,83,701,739,389,409,859,53,59,1,1033,83,
 563,587,1223,67,331,1,1429,1483,769,797,127,1709,
 1,457,1889]