A366631 - cp's OEIS frontend

A366631 Lexicographically earliest sequence such that each set of numbers enclosed by a pair of equal terms, excluding the endpoints, is distinct.

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	3
7	2
8	4
9	2
10	3
11	4
12	5
13	3
14	6
15	3
16	5
17	6
18	7
19	3
20	8
21	4
22	5
23	7
24	8
25	7
26	8
27	9
28	4
29	7
30	9
31	10
32	4
33	9
34	10
35	11
36	4
37	10
38	12
39	4
40	11
41	13
42	4
43	12
44	13
45	12
46	13
47	14
48	4
49	15
50	4
51	14
52	15
53	16
54	4
55	17
56	6
57	8
58	10
59	14
60	16
61	17
62	16
63	17
64	18
65	9
66	15
67	17
68	18
69	19
70	11
71	16
72	19
73	20
74	18
75	19

[1, 1, 2, 1, 2, 3, 2, 4, 2, 3, 4, 5, 3, 6, 3, 5, 6, 7, 3, 8, 4, 5, 7, 8, 7, 8, 9, 4, 7, 9, 10, 4, 9, 10, 11, 4, 10, 12, 4, 11, 13, 4, 12, 13, 12, 13, 14, 4, 15, 4, 14, 15, 16, 4, 17, 6, 8, 10, 14, 16, 17, 16, 17, 18, 9, 15, 17, 18, 19, 11, 16, 19, 20, 18, 19]

cp's OEIS Frontend

A366631 Lexicographically earliest sequence such that each set of numbers enclosed by a pair of equal terms, excluding the endpoints, is distinct.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	3
7	2
8	4
9	2
10	3
11	4
12	5
13	3
14	6
15	3
16	5
17	6
18	7
19	3
20	8
21	4
22	5
23	7
24	8
25	7
26	8
27	9
28	4
29	7
30	9
31	10
32	4
33	9
34	10
35	11
36	4
37	10
38	12
39	4
40	11
41	13
42	4
43	12
44	13
45	12
46	13
47	14
48	4
49	15
50	4
51	14
52	15
53	16
54	4
55	17
56	6
57	8
58	10
59	14
60	16
61	17
62	16
63	17
64	18
65	9
66	15
67	17
68	18
69	19
70	11
71	16
72	19
73	20
74	18
75	19

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	3
7	2
8	4
9	2
10	3
11	4
12	5
13	3
14	6
15	3
16	5
17	6
18	7
19	3
20	8
21	4
22	5
23	7
24	8
25	7
26	8
27	9
28	4
29	7
30	9
31	10
32	4
33	9
34	10
35	11
36	4
37	10
38	12
39	4
40	11
41	13
42	4
43	12
44	13
45	12
46	13
47	14
48	4
49	15
50	4
51	14
52	15
53	16
54	4
55	17
56	6
57	8
58	10
59	14
60	16
61	17
62	16
63	17
64	18
65	9
66	15
67	17
68	18
69	19
70	11
71	16
72	19
73	20
74	18
75	19

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	3
7	2
8	4
9	2
10	3
11	4
12	5
13	3
14	6
15	3
16	5
17	6
18	7
19	3
20	8
21	4
22	5
23	7
24	8
25	7
26	8
27	9
28	4
29	7
30	9
31	10
32	4
33	9
34	10
35	11
36	4
37	10
38	12
39	4
40	11
41	13
42	4
43	12
44	13
45	12
46	13
47	14
48	4
49	15
50	4
51	14
52	15
53	16
54	4
55	17
56	6
57	8
58	10
59	14
60	16
61	17
62	16
63	17
64	18
65	9
66	15
67	17
68	18
69	19
70	11
71	16
72	19
73	20
74	18
75	19