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A006087 as a simple table

na(n)
11
22
33
44
54
67
77
86
99
1013
1110
1213
1310
147
1511
1615
1710
1815
199
2012
217
2217
2312
2418
2516
2614
2719
2820
2919
3012
3115
3220
3310
3420
3518
3622
3719
3813
3912
4013
4117
4229
4318
4433
4520
4623
4729
4834
4923
5022
5131
5238
5324
5423
5538
5633
5737
5840
5919
6038
6124
6237
6329
6440
6522
6634
6724
6833

[1,2,3,4,4,7,7,6,9,13,10,13,10,7,11,15,10,15,9,12,
 7,17,12,18,16,14,19,20,19,12,15,20,10,20,18,22,19,
 13,12,13,17,29,18,33,20,23,29,34,23,22,31,38,24,
 23,38,33,37,40,19,38,24,37,29,40,22,34,24,33]