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A079833 as a simple table

na(n)
12
27
35
47
57
671
771
871
971
1071
1113
1271
1319
1471
1519
1671
1719
1871
1971
2071
2171
2271
2371
2471
2571
2671
2731
2871
2931
3071
3137
3271
3337
3471
3543
3659
3743
3871
3943
40811
4143
4271
4359
4471
4559
4671
47811
48811
49811
5071
5159
52811
5359
54811
5559
5671
5761
58811
5961
60163
6173
62811
6373
6471
6573
66811
6773

[2,7,5,7,7,71,71,71,71,71,13,71,19,71,19,71,19,71,
 71,71,71,71,71,71,71,71,31,71,31,71,37,71,37,71,
 43,59,43,71,43,811,43,71,59,71,59,71,811,811,811,
 71,59,811,59,811,59,71,61,811,61,163,73,811,73,71,
 73,811,73]