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A087819 as a simple table

na(n)
10
22
30
43
54
64
75
86
95
106
110
127
136
148
158
160
179
188
199
2010
2110
228
239
240
2511
2611
2712
2810
2912
3011
3112
3213
3310
3413
3512
3614
3714
3814
3912
4015
4113
4215
4314
4416
4515
4616
4713
4814
4916
5015
5117
5217
5313
5414
5518
5618
5716
5818
5917
600
6119
6215
6318
6419
6517
6619
6720
6818
6920
7015
7120
7217
730
7421
7520
7621
7719
7821

[0,2,0,3,4,4,5,6,5,6,0,7,6,8,8,0,9,8,9,10,10,8,9,
 0,11,11,12,10,12,11,12,13,10,13,12,14,14,14,12,15,
 13,15,14,16,15,16,13,14,16,15,17,17,13,14,18,18,
 16,18,17,0,19,15,18,19,17,19,20,18,20,15,20,17,0,
 21,20,21,19,21]