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A072756 as a simple table

na(n)
00
11
22
34
45
58
69
710
811
914
1017
1118
1219
1320
1422
1523
1624
1726
1829
1931
2032
2135
2237
2338
2440
2541
2642
2744
2845
2947
3049
3150
3251
3353
3454
3556
3658
3759
3862
3964
4065
4168
4269
4371
4472
4574
4677
4778
4880
4982
5083
5185
5286
5389
5490
5591
5692
5794
5895
5998
6099
61100
62101
63104
64105
65107
66109
67110

[0,1,2,4,5,8,9,10,11,14,17,18,19,20,22,23,24,26,
 29,31,32,35,37,38,40,41,42,44,45,47,49,50,51,53,
 54,56,58,59,62,64,65,68,69,71,72,74,77,78,80,82,
 83,85,86,89,90,91,92,94,95,98,99,100,101,104,105,
 107,109,110]