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A290649 as a simple table

na(n)
01
13
27
37
413
515
615
715
825
927
1031
1131
1231
1331
1431
1531
1649
1751
1855
1955
2061
2163
2263
2363
2463
2563
2663
2763
2863
2963
3063
3163
3297
3399
34103
35103
36109
37111
38111
39111
40121
41123
42127
43127
44127
45127
46127
47127
48127
49127
50127
51127
52127
53127
54127
55127
56127
57127
58127
59127

[1,3,7,7,13,15,15,15,25,27,31,31,31,31,31,31,49,
 51,55,55,61,63,63,63,63,63,63,63,63,63,63,63,97,
 99,103,103,109,111,111,111,121,123,127,127,127,
 127,127,127,127,127,127,127,127,127,127,127,127,
 127,127,127]