A113698 - cp's OEIS frontend

A113698 Combinatorial sequence. Begin with 1 then 2 then 12 then 3 then all concatenations of all sizes of 1,2 and 3, then 4, then all concatenations of all sizes of 1,2,3,4 not included earlier etc.

n	a(n)
1	1
2	2
3	12
4	3
5	13
6	23
7	123
8	4
9	14
10	24
11	34
12	124
13	134
14	234
15	1234
16	5
17	15
18	25
19	35
20	45
21	125
22	135
23	145
24	235
25	245
26	345
27	1235
28	1245
29	1345
30	2345
31	12345
32	6
33	16
34	26
35	36
36	46
37	56
38	126
39	136
40	146
41	156
42	236
43	246
44	256
45	346
46	356
47	456
48	1236
49	1246
50	1256
51	1346
52	1356
53	1456
54	2346
55	2356

[1, 2, 12, 3, 13, 23, 123, 4, 14, 24, 34, 124, 134, 234, 1234, 5, 15, 25, 35, 45, 125, 135, 145, 235, 245, 345, 1235, 1245, 1345, 2345, 12345, 6, 16, 26, 36, 46, 56, 126, 136, 146, 156, 236, 246, 256, 346, 356, 456, 1236, 1246, 1256, 1346, 1356, 1456, 2346, 2356]

cp's OEIS Frontend

A113698 Combinatorial sequence. Begin with 1 then 2 then 12 then 3 then all concatenations of all sizes of 1,2 and 3, then 4, then all concatenations of all sizes of 1,2,3,4 not included earlier etc.

Table of values

List of values