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A130330 as a simple table

na(n)
01
13
21
37
43
51
615
77
83
91
1031
1115
127
133
141
1563
1631
1715
187
193
201
21127
2263
2331
2415
257
263
271
28255
29127
3063
3131
3215
337
343
351
36511
37255
38127
3963
4031
4115
427
433
441
451023
46511
47255
48127
4963
5031
5115
527
533
541
552047
561023
57511
58255
59127
6063
6131
6215
637
643
651

[1,3,1,7,3,1,15,7,3,1,31,15,7,3,1,63,31,15,7,3,1,
 127,63,31,15,7,3,1,255,127,63,31,15,7,3,1,511,255,
 127,63,31,15,7,3,1,1023,511,255,127,63,31,15,7,3,
 1,2047,1023,511,255,127,63,31,15,7,3,1]