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A087817 as a simple table

na(n)
01
11
22
32
43
53
63
74
84
94
104
115
126
136
146
156
166
177
187
198
208
218
228
238
248
259
269
279
2810
2910
3010
3110
3210
3310
3410
3511
3611
3711
3811
3912
4013
4113
4213
4313
4413
4513
4613
4713
4814
4914
5014
5114
5214
5315
5415
5516
5616
5716
5816
5916
6016
6116
6216
6316
6417
6517
6617
6717
6817
6917
7018
7118
7218
7319
7419
7519
7619
7719
7819

[1,1,2,2,3,3,3,4,4,4,4,5,6,6,6,6,6,7,7,8,8,8,8,8,
 8,9,9,9,10,10,10,10,10,10,10,11,11,11,11,12,13,13,
 13,13,13,13,13,13,14,14,14,14,14,15,15,16,16,16,
 16,16,16,16,16,16,17,17,17,17,17,17,18,18,18,19,
 19,19,19,19,19]