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A087859 as a simple table

na(n)
10
21
33
47
58
610
715
813
913
1015
1110
1212
1315
1415
1518
1613
1722
1815
1923
2019
2123
2216
2319
2416
2522
2613
2715
2820
2923
3014
3118
3227
3320
3420
3516
3625
3721
3825
3914
4027
4121
4225
4329
4419
4526
4621
4725
4827
4921
5019
5115
5216
5332
5417
5519
5619
5721
5817
5922
6023
6129
6224
6329
6429
6518
6625
6725

[0,1,3,7,8,10,15,13,13,15,10,12,15,15,18,13,22,15,
 23,19,23,16,19,16,22,13,15,20,23,14,18,27,20,20,
 16,25,21,25,14,27,21,25,29,19,26,21,25,27,21,19,
 15,16,32,17,19,19,21,17,22,23,29,24,29,29,18,25,
 25]