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A023117 as a simple table

na(n)
11
22
33
41
54
62
75
83
91
106
114
122
137
145
153
161
178
186
194
202
219
227
235
243
251
2610
278
286
294
302
3111
329
337
345
353
3612
371
3810
398
406
414
4213
432
4411
459
467
475
4814
493
5012
511
5210
538
546
5515
564
5713
582
5911
609
617
6216
635
6414
653
6612
671
6810
698
7017
716
7215
734
7413
752
7611
779
7818
797
8016
815
8214
833
8412
851
8610

[1,2,3,1,4,2,5,3,1,6,4,2,7,5,3,1,8,6,4,2,9,7,5,3,
 1,10,8,6,4,2,11,9,7,5,3,12,1,10,8,6,4,13,2,11,9,7,
 5,14,3,12,1,10,8,6,15,4,13,2,11,9,7,16,5,14,3,12,
 1,10,8,17,6,15,4,13,2,11,9,18,7,16,5,14,3,12,1,10]