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A076942 as a simple table

na(n)
13
24
31
42
53
64
75
81
97
108
119
122
1311
1412
151
163
1715
1816
1917
204
213
2220
2321
241
2523
2624
2725
286
2927
304
3129
327
333
3432
351
368
3735
3836
395
402
4139
424
4341
4410
458
4644
4745
481
4947
5048
515
5212
5351
5452
558
563
577
5856
5957
602
6159
6260
631
6415
653
668
6765
6816
697
7012
7169
724
7371
7472
759
7618
7715
788
7977
801
8179
8280
8381

[3,4,1,2,3,4,5,1,7,8,9,2,11,12,1,3,15,16,17,4,3,
 20,21,1,23,24,25,6,27,4,29,7,3,32,1,8,35,36,5,2,
 39,4,41,10,8,44,45,1,47,48,5,12,51,52,8,3,7,56,57,
 2,59,60,1,15,3,8,65,16,7,12,69,4,71,72,9,18,15,8,
 77,1,79,80,81]