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A057717 as a simple table

na(n)
00
12
23
34
45
56
67
78
89
911
1012
1113
1214
1315
1416
1517
1618
1719
1820
1921
2022
2123
2224
2325
2426
2527
2628
2729
2830
2931
3032
3133
3234
3335
3436
3537
3638
3739
3840
3941
4042
4143
4244
4345
4446
4547
4648
4749
4850
4951
5052
5153
5254
5355
5456
5557
5658
5759
5860
5961
6062
6163
6264
6365
6466
6567
6668
6769
6870

[0,2,3,4,5,6,7,8,9,11,12,13,14,15,16,17,18,19,20,
 21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,
 37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,
 53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,
 69,70]