n | a(n) |
---|---|
1 | 1 |
2 | 12 |
3 | 21 |
4 | 22 |
5 | 123 |
6 | 132 |
7 | 213 |
8 | 231 |
9 | 312 |
10 | 321 |
11 | 333 |
12 | 1224 |
13 | 1234 |
14 | 1242 |
15 | 1243 |
16 | 1324 |
17 | 1342 |
18 | 1422 |
19 | 1423 |
20 | 1432 |
21 | 2124 |
22 | 2134 |
23 | 2142 |
24 | 2143 |
25 | 2214 |
26 | 2241 |
27 | 2244 |
28 | 2314 |
29 | 2341 |
30 | 2412 |
31 | 2413 |
32 | 2421 |
33 | 2424 |
34 | 2431 |
35 | 2442 |
36 | 3124 |
37 | 3142 |
38 | 3214 |
39 | 3241 |
40 | 3412 |
41 | 3421 |
42 | 4122 |
43 | 4123 |
44 | 4132 |
45 | 4212 |
46 | 4213 |
[1,12,21,22,123,132,213,231,312,321,333,1224,1234, 1242,1243,1324,1342,1422,1423,1432,2124,2134,2142, 2143,2214,2241,2244,2314,2341,2412,2413,2421,2424, 2431,2442,3124,3142,3214,3241,3412,3421,4122,4123, 4132,4212,4213] |