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A172980 as a simple table

na(n)
11
23
34
49
511
612
713
815
916
1033
1137
1242
1343
14117
15154
16159
17163
18168
19173
20231
21338
22555
23557
24558
25649
261161
271168
281209
291213
301254
311259
321263
331406
341467
351573
361578
371579
382595
392752
402805
412813
422964
432969
442997
453014
465013
475021
485022
495057
505115

[1,3,4,9,11,12,13,15,16,33,37,42,43,117,154,159,
 163,168,173,231,338,555,557,558,649,1161,1168,
 1209,1213,1254,1259,1263,1406,1467,1573,1578,1579,
 2595,2752,2805,2813,2964,2969,2997,3014,5013,5021,
 5022,5057,5115]