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A139789 as a simple table

na(n)
10
20
31
41
52
62
73
83
94
104
114
124
135
145
156
166
176
186
196
207
217
227
238
248
258
269
279
2810
2910
3011
3111
3212
3312
3412
3512
3612
3712
3812
3913
4013
4113
4213
4313
4413
4514
4614
4714
4814
4915
5015
5116
5216
5316
5416
5516
5616
5716
5816
5916
6017
6117
6217
6317
6418
6518
6619
6719
6819
6919
7019
7120
7220
7320
7420
7520
7621
7721
7821

[0,0,1,1,2,2,3,3,4,4,4,4,5,5,6,6,6,6,6,7,7,7,8,8,
 8,9,9,10,10,11,11,12,12,12,12,12,12,12,13,13,13,
 13,13,13,14,14,14,14,15,15,16,16,16,16,16,16,16,
 16,16,17,17,17,17,18,18,19,19,19,19,19,20,20,20,
 20,20,21,21,21]