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A277618 as a simple table

na(n)
00
12
24
31
43
55
67
79
86
98
1010
1112
1214
1311
1413
1515
1617
1719
1816
1918
2020
2122
2224
2321
2423
2525
2627
2729
2826
2928
3030
3132
3234
3331
3433
3535
3637
3739
3836
3938
4040
4142
4244
4341
4443
4545
4647
4749
4846
4948
5050
5152
5254
5351
5453
5555
5657
5759
5856
5958
6060
6162
6264
6361
6463
6565
6667
6769
6866
6968
7070
7172
7274
7371
7473
7575
7677
7779
7876
7978
8080
8182
8284
8381
8483
8585
8687
8789
8886
8988
9090

[0,2,4,1,3,5,7,9,6,8,10,12,14,11,13,15,17,19,16,
 18,20,22,24,21,23,25,27,29,26,28,30,32,34,31,33,
 35,37,39,36,38,40,42,44,41,43,45,47,49,46,48,50,
 52,54,51,53,55,57,59,56,58,60,62,64,61,63,65,67,
 69,66,68,70,72,74,71,73,75,77,79,76,78,80,82,84,
 81,83,85,87,89,86,88,90]