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A257003 as a simple table

na(n)
01
12
23
33
45
55
64
76
87
95
107
1110
127
1310
1411
159
167
1711
1813
197
2010
2116
2212
2311
2416
2513
2610
2714
2821
2917
308
3115
3218
3314
3418
3521
3613
3712
3820
3927
4011
4116
4226
4318
4417
4525
4623
4721
4813
4920
5025
5112
5220
5332
5424
5518
5626
5727
5818
5918
6038
6131
6215
6318
6433

[1,2,3,3,5,5,4,6,7,5,7,10,7,10,11,9,7,11,13,7,10,
 16,12,11,16,13,10,14,21,17,8,15,18,14,18,21,13,12,
 20,27,11,16,26,18,17,25,23,21,13,20,25,12,20,32,
 24,18,26,27,18,18,38,31,15,18,33]