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A248962 as a simple table

na(n)
10
21
32
44
55
66
78
89
99
1011
1112
1214
1315
1415
1516
1618
1719
1821
1922
2023
2124
2224
2326
2428
2530
2630
2730
2831
2932
3034
3135
3236
3337
3439
3540
3641
3742
3844
3946
4046
4147
4247
4348
4450
4551
4653
4754
4855
4956
5058
5159
5261
5361
5462
5562
5664
5766
5866
5967
6068
6168
6270
6372
6473
6574
6675
6776

[0,1,2,4,5,6,8,9,9,11,12,14,15,15,16,18,19,21,22,
 23,24,24,26,28,30,30,30,31,32,34,35,36,37,39,40,
 41,42,44,46,46,47,47,48,50,51,53,54,55,56,58,59,
 61,61,62,62,64,66,66,67,68,68,70,72,73,74,75,76]