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A023982 as a simple table

na(n)
13
26
37
49
513
613
717
817
917
1019
1121
1220
1327
1427
1528
1626
1730
1829
1930
2034
2136
2233
2338
2436
2538
2643
2740
2840
2946
3044
3148
3243
3346
3447
3548
3647
3751
3853
3955
4053
4157
4257
4355
4457
4559
4658
4763
4858
4962
5063
5164
5267
5373
5466
5569
5668
5767
5873
5973
6074
6179
6280
6378
6471
6577
6676
6777
6879
6984
7079
7187
7282
7387
7489
7586
7689

[3,6,7,9,13,13,17,17,17,19,21,20,27,27,28,26,30,
 29,30,34,36,33,38,36,38,43,40,40,46,44,48,43,46,
 47,48,47,51,53,55,53,57,57,55,57,59,58,63,58,62,
 63,64,67,73,66,69,68,67,73,73,74,79,80,78,71,77,
 76,77,79,84,79,87,82,87,89,86,89]