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A037975 as a simple table

na(n)
140
280
381
4120
5122
6161
7162
8202
9240
10241
11244
12245
13283
14323
15324
16360
17361
18362
19366
20367
21368
22404
23405
24445
25483
26484
27487
28488
29526
30566
31567
32606
33608
34647
35648
36688
37720
38721
39722
40723
41724
42725
43732
44733
45734
46735

[40,80,81,120,122,161,162,202,240,241,244,245,283,
 323,324,360,361,362,366,367,368,404,405,445,483,
 484,487,488,526,566,567,606,608,647,648,688,720,
 721,722,723,724,725,732,733,734,735]