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A370655 as a simple table

na(n)
12
21
33
44
55
67
76
88
99
1010
1113
1214
1311
1412
1516
1615
1717
1820
1919
2018
2121
2226
2327
2424
2525
2622
2723
2829
2928
3030
3135
3232
3333
3434
3531
3636
3743
3844
3941
4042
4139
4240
4337
4438
4546
4645
4747
4854
4949
5052
5151
5250
5353
5448
5555

[2,1,3,4,5,7,6,8,9,10,13,14,11,12,16,15,17,20,19,
 18,21,26,27,24,25,22,23,29,28,30,35,32,33,34,31,
 36,43,44,41,42,39,40,37,38,46,45,47,54,49,52,51,
 50,53,48,55]