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A169812 as a simple table

na(n)
10
20
31
47
57
62
75
812
910
1014
119
1210
1315
1410
1511
1621
1719
1820
1917
2018
2117
2218
2321
2416
2526
2630
2731
2826
2931
3022
3129
3238
3337
3438
3539
3645
3739
3834
3935
4032
4143
4234
4341
4442
4543
4642
4745
4858
4950
5052
5155
5250
5355
5462
5551
5648
5761
5862
5957
6048
6163
6258
6357
6471
6569
6674
6765
6866
6965
7078
7169
7268
7375
7478

[0,0,1,7,7,2,5,12,10,14,9,10,15,10,11,21,19,20,17,
 18,17,18,21,16,26,30,31,26,31,22,29,38,37,38,39,
 45,39,34,35,32,43,34,41,42,43,42,45,58,50,52,55,
 50,55,62,51,48,61,62,57,48,63,58,57,71,69,74,65,
 66,65,78,69,68,75,78]