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A308754 as a simple table

na(n)
00
11
22
32
43
54
64
75
86
96
107
117
127
138
149
159
169
1710
1810
1911
2012
2112
2213
2313
2413
2514
2614
2714
2815
2916
3016
3116
3217
3317
3418
3519
3619
3719
3820
3920
4021
4121
4221
4322
4422
4522
4622
4723
4823
4924
5025
5125
5226
5327
5427
5528
5628
5728
5828
5928
6028
6128
6229
6329
6430
6530
6630
6731

[0,1,2,2,3,4,4,5,6,6,7,7,7,8,9,9,9,10,10,11,12,12,
 13,13,13,14,14,14,15,16,16,16,17,17,18,19,19,19,
 20,20,21,21,21,22,22,22,22,23,23,24,25,25,26,27,
 27,28,28,28,28,28,28,28,29,29,30,30,30,31]