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A120619 as a simple table

na(n)
11
22
34
43
57
65
78
811
96
1014
119
1212
1315
1419
1510
1622
1713
1817
1921
2027
2116
2223
2331
2418
2524
2629
2736
2820
2939
3025
3128
3232
3334
3438
3546
3626
3749
3830
3935
4044
4154
4233
4341
4445
4559
4637
4742
4848
4955
5065
5140
5268
5343
5450
5552
5658
5763
5875
5947
6078
6151
6256
6361
6464
6572
6685
6753
6862
6971
7090
7157
7266

[1,2,4,3,7,5,8,11,6,14,9,12,15,19,10,22,13,17,21,
 27,16,23,31,18,24,29,36,20,39,25,28,32,34,38,46,
 26,49,30,35,44,54,33,41,45,59,37,42,48,55,65,40,
 68,43,50,52,58,63,75,47,78,51,56,61,64,72,85,53,
 62,71,90,57,66]