login

A171083 as a simple table

na(n)
12
23
31
44
57
66
75
88
99
1011
1110
1212
1313
1414
1515
1616
1718
1817
1919
2020
2121
2222
2324
2423
2525
2626
2727
2829
2928
3030
3131
3232
3333
3434
3535
3637
3736
3838
3939
4040
4141
4242
4343
4444
4546
4645
4747
4848
4949
5050
5151
5252
5353
5454
5555
5657
5756
5858
5959
6060
6161
6262
6363
6464
6565
6667
6766

[2,3,1,4,7,6,5,8,9,11,10,12,13,14,15,16,18,17,19,
 20,21,22,24,23,25,26,27,29,28,30,31,32,33,34,35,
 37,36,38,39,40,41,42,43,44,46,45,47,48,49,50,51,
 52,53,54,55,57,56,58,59,60,61,62,63,64,65,67,66]