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A306921 as a simple table

na(n)
01
11
22
32
43
53
64
74
84
94
106
116
126
136
148
158
165
175
188
198
209
219
2212
2312
248
258
2612
2712
2812
2912
3016
3116
326
336
3410
3510
3612
3712
3816
3916
4012
4112
4218
4318
4418
4518
4624
4724
4810
4910
5016
5116
5218
5318
5424
5524
5616
5716
5824
5924
6024
6124
6232
6332
647
657
6612
6712
6815
6915
7020
7120
7216

[1,1,2,2,3,3,4,4,4,4,6,6,6,6,8,8,5,5,8,8,9,9,12,
 12,8,8,12,12,12,12,16,16,6,6,10,10,12,12,16,16,12,
 12,18,18,18,18,24,24,10,10,16,16,18,18,24,24,16,
 16,24,24,24,24,32,32,7,7,12,12,15,15,20,20,16]