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A303768 as a simple table

na(n)
00
11
23
32
45
56
64
77
89
910
1012
1111
1214
1315
1413
158
1617
1718
1820
1919
2022
2123
2221
2324
2426
2527
2629
2728
2831
2916
3030
3125
3233
3334
3436
3535
3638
3739
3837
3940
4042
4143
4245
4344
4447
4548
4646
4741
4850
4951
5053
5152
5255
5356
5454
5557
5659
5760
5862
5961
6032
6149
6263
6358
6465
6566
6668
6767
6870
6971
7069
7172
7274
7375
7477
7576
7679
7780
7878
7973
8082
8183
8285
8384
8487

[0,1,3,2,5,6,4,7,9,10,12,11,14,15,13,8,17,18,20,
 19,22,23,21,24,26,27,29,28,31,16,30,25,33,34,36,
 35,38,39,37,40,42,43,45,44,47,48,46,41,50,51,53,
 52,55,56,54,57,59,60,62,61,32,49,63,58,65,66,68,
 67,70,71,69,72,74,75,77,76,79,80,78,73,82,83,85,
 84,87]