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A162200 as a simple table

na(n)
10
20
32
42
55
64
77
86
99
106
1110
128
1313
1412
1515
1612
1718
1816
1920
2017
2120
2218
2323
2420
2527
2623
2726
2825
2928
3027
3136
3229
3334
3432
3538
3634
3738
3834
3939
4036
4142
4240
4346
4442
4545
4644
4751
4841
4949
5048
5151
5248
5352
5448
5556
5652
5758
5856
5960
6057
6160
6256
6368
6461
6564
6663
6772
6864
6972
7068
7171
7268
7375

[0,0,2,2,5,4,7,6,9,6,10,8,13,12,15,12,18,16,20,17,
 20,18,23,20,27,23,26,25,28,27,36,29,34,32,38,34,
 38,34,39,36,42,40,46,42,45,44,51,41,49,48,51,48,
 52,48,56,52,58,56,60,57,60,56,68,61,64,63,72,64,
 72,68,71,68,75]