A278982 - OEIS

A278982 as a simple table

n	a(n)
1	1
2	12
3	123
4	213
5	1234
6	1324
7	2134
8	2314
9	3124
10	12345
11	12435
12	13245
13	13425
14	14235
15	21345
16	21435
17	23145
18	23415
19	24135
20	31245
21	31425
22	32415
23	34125
24	41235
25	41325
26	123456
27	123546
28	124356
29	124536
30	125346
31	132456
32	132546
33	134256
34	134526
35	135246
36	142356
37	142536

[1,12,123,213,1234,1324,2134,2314,3124,12345, 12435,13245,13425,14235,21345,21435,23145,23415, 24135,31245,31425,32415,34125,41235,41325,123456, 123546,124356,124536,125346,132456,132546,134256, 134526,135246,142356,142536]