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A181683 as a simple table

na(n)
13
26
37
411
520
629
730
838
956
1063
1189
12114
13124
14131
15139
16140
17176
18184
19192
20195
21198
22208
23214
24215
25223
26243
27300
28301
29331
30337
31345
32359
33372
34377
35388
36393
37407
38411
39451
40455
41459
42461
43476
44482
45483
46487
47506
48508
49516
50523
51536

[3,6,7,11,20,29,30,38,56,63,89,114,124,131,139,
 140,176,184,192,195,198,208,214,215,223,243,300,
 301,331,337,345,359,372,377,388,393,407,411,451,
 455,459,461,476,482,483,487,506,508,516,523,536]