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A258835 as a simple table

na(n)
01
13
23
34
47
56
69
713
89
910
1015
1115
1213
1319
1418
1516
1630
1721
1819
1927
2021
2131
2231
2324
2425
2539
2633
2728
2848
2930
3035
3154
3233
3334
3452
3542
3645
3751
3839
3945
4055
4151
4250
4370
4445
4546
4678
4748
4854
4980
5057
5163
5278
5354
5455
5575
5684
5758
5879
5960
6061
61117
6263
6374
6487
6572
6681

[1,3,3,4,7,6,9,13,9,10,15,15,13,19,18,16,30,21,19,
 27,21,31,31,24,25,39,33,28,48,30,35,54,33,34,52,
 42,45,51,39,45,55,51,50,70,45,46,78,48,54,80,57,
 63,78,54,55,75,84,58,79,60,61,117,63,74,87,72,81]