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A136478 as a simple table

na(n)
17
27
33
415
515
615
77
83
95
107
113
1215
1315
1427
153
1615
173
1827
1915
2027
2113
223
2349
2417
2555
2627
2727
2815
2953
3077
3163
3277
3315
3445
3515
3669
3745
3877
3915
4057
4175
4227
4375
4463
4555
4675
4749
4885
497
503

[7,7,3,15,15,15,7,3,5,7,3,15,15,27,3,15,3,27,15,
 27,13,3,49,17,55,27,27,15,53,77,63,77,15,45,15,69,
 45,77,15,57,75,27,75,63,55,75,49,85,7,3]