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A117949 as a simple table

na(n)
11
24
37
412
521
623
727
831
971
1079
1189
12151
13168
14199
15223
16232
17239
18263
19311
20324
21336
22345
23359
24390
25463
26479
27497
28540
29599
30743
31751
32823
33858
34863
35911
36991
371031
381063
391103
401151
411302
421303
431343
441399
451471
461540
471583
481687
491759
501802
511823

[1,4,7,12,21,23,27,31,71,79,89,151,168,199,223,
 232,239,263,311,324,336,345,359,390,463,479,497,
 540,599,743,751,823,858,863,911,991,1031,1063,
 1103,1151,1302,1303,1343,1399,1471,1540,1583,1687,
 1759,1802,1823]