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A046791 as a simple table

na(n)
12
21
34
42
56
61
73
82
94
1010
115
1212
131
142
156
1614
177
184
192
203
2120
221
2322
2410
256
262
2711
284
2926
3012
3128
3213
3330
341
355
3614
372
3815
3934
404
413
426
4338
4417
4510
462
4742
481
4919
507
5144
5220
5346
5421
5512
564
5722
582
5923
6052
616
6214
631
6458
6526
6660
672
683
695
7062
7110
7228
734
7429
7566
7630
7768
7811
7931
8070
812
821
836
8474
8533

[2,1,4,2,6,1,3,2,4,10,5,12,1,2,6,14,7,4,2,3,20,1,
 22,10,6,2,11,4,26,12,28,13,30,1,5,14,2,15,34,4,3,
 6,38,17,10,2,42,1,19,7,44,20,46,21,12,4,22,2,23,
 52,6,14,1,58,26,60,2,3,5,62,10,28,4,29,66,30,68,
 11,31,70,2,1,6,74,33]