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A061451 as a simple table

na(n)
12
23
33
44
55
65
75
87
99
108
116
129
1313
1417
1513
167
1711
1817
1925
2031
2121
228
2313
2421
2533
2649
2757
2834
299
3015
3125
3241
3365
3494
35105
3655
3710
3817
3929
4049
4181
42129
43181
44193
4589
4611
4719
4833
4957
5097
51161
52253
53349
54355
55144
5612
5721
5837
5965
60113
61193
62321
63497
64673
65653
66233

[2,3,3,4,5,5,5,7,9,8,6,9,13,17,13,7,11,17,25,31,
 21,8,13,21,33,49,57,34,9,15,25,41,65,94,105,55,10,
 17,29,49,81,129,181,193,89,11,19,33,57,97,161,253,
 349,355,144,12,21,37,65,113,193,321,497,673,653,
 233]