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A208971 as a simple table

na(n)
11
23
34
48
511
618
724
835
945
1061
1176
1298
13119
14148
15176
16213
17249
18295
19340
20396
21451
22518
23584
24663
25741
26833
27924
281030
291135
301256
311376
321513
331649
341803
351956
362128
372299
382490
392680
402891
413101
423333
433564
443818
454071
464348
474624
484925
495225
505551
515876

[1,3,4,8,11,18,24,35,45,61,76,98,119,148,176,213,
 249,295,340,396,451,518,584,663,741,833,924,1030,
 1135,1256,1376,1513,1649,1803,1956,2128,2299,2490,
 2680,2891,3101,3333,3564,3818,4071,4348,4624,4925,
 5225,5551,5876]