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A081994 as a simple table

na(n)
11
22
33
45
54
67
79
811
98
1013
1117
1219
1315
1414
1523
1629
1725
1831
1927
2016
2137
2241
2343
2447
2553
2621
2710
2859
2949
3061
3167
3255
3371
3439
3532
3673
3779
3883
3989
4097
4165
4277
4351
4438
45101
46103
4791
48107
49109
50113
51127
5295
5333
5434
55131
56121
57137
58139
59149
60151
61157
62161
6385
6457
6526
66163
67167

[1,2,3,5,4,7,9,11,8,13,17,19,15,14,23,29,25,31,27,
 16,37,41,43,47,53,21,10,59,49,61,67,55,71,39,32,
 73,79,83,89,97,65,77,51,38,101,103,91,107,109,113,
 127,95,33,34,131,121,137,139,149,151,157,161,85,
 57,26,163,167]