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A304088 as a simple table

na(n)
01
12
23
32
44
53
62
75
86
94
103
112
127
135
147
155
168
176
184
193
202
219
227
235
2410
257
265
279
287
295
3011
3112
327
3313
349
354
363
372
388
396
407
415
4214
439
447
455
4613
4710
487
495
5010
517
5214
539
547
555
5615
5711
5815
5911
6016
6115
6211
639
647
6512
668
676
684
693
702
7117
7214
739
747
755
7618
7714
789
797
805
8119
8213
839
847
855
8620
8715
8811
8918
9013
9110
927
935
9421
9515
9611
9721
9815
9911
10017
10114
1029
1037
1045

[1,2,3,2,4,3,2,5,6,4,3,2,7,5,7,5,8,6,4,3,2,9,7,5,
 10,7,5,9,7,5,11,12,7,13,9,4,3,2,8,6,7,5,14,9,7,5,
 13,10,7,5,10,7,14,9,7,5,15,11,15,11,16,15,11,9,7,
 12,8,6,4,3,2,17,14,9,7,5,18,14,9,7,5,19,13,9,7,5,
 20,15,11,18,13,10,7,5,21,15,11,21,15,11,17,14,9,7,
 5]