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A072945 as a simple table

na(n)
01
13
23
34
45
55
65
76
87
98
108
119
129
1310
1410
1510
1612
1712
1812
1912
2012
2113
2213
2314
2414
2515
2615
2716
2816
2916
3016
3118
3219
3319
3419
3519
3620
3721
3821
3921
4021
4121
4221
4323
4423
4524
4624
4724
4824
4925
5025
5125
5225
5325
5425
5526
5627
5728
5828
5928
6028
6128
6228
6328
6430
6530
6630
6731
6831
6932
7032
7133
7233

[1,3,3,4,5,5,5,6,7,8,8,9,9,10,10,10,12,12,12,12,
 12,13,13,14,14,15,15,16,16,16,16,18,19,19,19,19,
 20,21,21,21,21,21,21,23,23,24,24,24,24,25,25,25,
 25,25,25,26,27,28,28,28,28,28,28,28,30,30,30,31,
 31,32,32,33,33]