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A390945 as a simple table

na(n)
12
23
33
44
54
65
75
85
96
106
116
126
137
147
157
167
178
188
198
208
218
229
239
249
259
269
279
2810
2910
3010
3110
3210
3310
3411
3511
3611
3711
3811
3911
4011
4112
4212
4312
4412
4512
4612
4712
4812
4913
5013
5113
5213
5313
5413
5513
5613
5714
5814
5914
6014
6114
6214
6314
6414
6514
6615
6715
6815
6915
7015
7115
7215
7315
7415
7515
7616

[2,3,3,4,4,5,5,5,6,6,6,6,7,7,7,7,8,8,8,8,8,9,9,9,
 9,9,9,10,10,10,10,10,10,11,11,11,11,11,11,11,12,
 12,12,12,12,12,12,12,13,13,13,13,13,13,13,13,14,
 14,14,14,14,14,14,14,14,15,15,15,15,15,15,15,15,
 15,15,16]