A082185 - cp's OEIS frontend

A082185 Triangle read by rows: n-th row contains concatenations of nonempty subsets of {1, 2, ..., n}, ordered first by size and then lexicographically.

n	a(n)
1	1
2	1
3	2
4	12
5	1
6	2
7	3
8	12
9	13
10	23
11	123
12	1
13	2
14	3
15	4
16	12
17	13
18	14
19	23
20	24
21	34
22	123
23	124
24	134
25	234
26	1234
27	1
28	2
29	3
30	4
31	5
32	12
33	13
34	14
35	15
36	23
37	24
38	25
39	34
40	35
41	45
42	123
43	124
44	125
45	134
46	135
47	145
48	234
49	235
50	245
51	345
52	1234
53	1235
54	1245
55	1345
56	2345
57	12345
58	1
59	2
60	3
61	4
62	5
63	6
64	12
65	13
66	14
67	15

[1, 1, 2, 12, 1, 2, 3, 12, 13, 23, 123, 1, 2, 3, 4, 12, 13, 14, 23, 24, 34, 123, 124, 134, 234, 1234, 1, 2, 3, 4, 5, 12, 13, 14, 15, 23, 24, 25, 34, 35, 45, 123, 124, 125, 134, 135, 145, 234, 235, 245, 345, 1234, 1235, 1245, 1345, 2345, 12345, 1, 2, 3, 4, 5, 6, 12, 13, 14, 15]

cp's OEIS Frontend

A082185 Triangle read by rows: n-th row contains concatenations of nonempty subsets of {1, 2, ..., n}, ordered first by size and then lexicographically.

Table of values

List of values