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A317987 as a simple table

na(n)
139
255
356
463
568
680
7128
8136
9144
10155
11156
12171
13184
14196
15203
16208
17219
18220
19224
20252
21256
22259
23260
24264
25275
26276
27291
28292
29308
30320
31323
32328
33336
34355
35360
36363
37384
38387
39388
40400
41456
42468
43475
44504
45507
46528
47544
48552
49564
50568
51576
52580
53592
54600
55603
56612
57616
58624
59640

[39,55,56,63,68,80,128,136,144,155,156,171,184,
 196,203,208,219,220,224,252,256,259,260,264,275,
 276,291,292,308,320,323,328,336,355,360,363,384,
 387,388,400,456,468,475,504,507,528,544,552,564,
 568,576,580,592,600,603,612,616,624,640]