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A115209 as a simple table

na(n)
01
10
20
31
42
52
64
74
88
94
108
115
129
138
1412
157
1613
1712
1814
1912
2019
2116
2217
2317
2418
2517
2622
2720
2823
2917
3021
3124
3229
3325
3429
3525
3625
3729
3831
3928
4033
4132
4227
4334
4434
4534
4636
4737
4840
4936
5039
5141
5243
5343
5438
5542
5647
5747
5846
5944
6045
6148
6249
6348
6451
6549
6649
6749
6859
6954
7058
7155
7254
7359

[1,0,0,1,2,2,4,4,8,4,8,5,9,8,12,7,13,12,14,12,19,
 16,17,17,18,17,22,20,23,17,21,24,29,25,29,25,25,
 29,31,28,33,32,27,34,34,34,36,37,40,36,39,41,43,
 43,38,42,47,47,46,44,45,48,49,48,51,49,49,49,59,
 54,58,55,54,59]