A370263 - cp's OEIS frontend

A370263 Lexicographically earliest sequence such that each subsequence enclosed by a pair of equal values, excluding the endpoints, has a unique sum.

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	3
7	1
8	2
9	4
10	1
11	5
12	3
13	6
14	1
15	2
16	4
17	7
18	2
19	3
20	5
21	6
22	4
23	5
24	7
25	8
26	1
27	3
28	5
29	2
30	6
31	4
32	9
33	10
34	7
35	1
36	3
37	8
38	11
39	4
40	2
41	8
42	9
43	12
44	1
45	3
46	6
47	4
48	7
49	11
50	10
51	2
52	5
53	8
54	13
55	14
56	2
57	9
58	15
59	7
60	1
61	3
62	4
63	11
64	13
65	12
66	16
67	1
68	5
69	14
70	6
71	8
72	10
73	9
74	4
75	17
76	2
77	10
78	3
79	18
80	11
81	16

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

cp's OEIS Frontend

A370263 Lexicographically earliest sequence such that each subsequence enclosed by a pair of equal values, excluding the endpoints, has a unique sum.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	3
7	1
8	2
9	4
10	1
11	5
12	3
13	6
14	1
15	2
16	4
17	7
18	2
19	3
20	5
21	6
22	4
23	5
24	7
25	8
26	1
27	3
28	5
29	2
30	6
31	4
32	9
33	10
34	7
35	1
36	3
37	8
38	11
39	4
40	2
41	8
42	9
43	12
44	1
45	3
46	6
47	4
48	7
49	11
50	10
51	2
52	5
53	8
54	13
55	14
56	2
57	9
58	15
59	7
60	1
61	3
62	4
63	11
64	13
65	12
66	16
67	1
68	5
69	14
70	6
71	8
72	10
73	9
74	4
75	17
76	2
77	10
78	3
79	18
80	11
81	16

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	3
7	1
8	2
9	4
10	1
11	5
12	3
13	6
14	1
15	2
16	4
17	7
18	2
19	3
20	5
21	6
22	4
23	5
24	7
25	8
26	1
27	3
28	5
29	2
30	6
31	4
32	9
33	10
34	7
35	1
36	3
37	8
38	11
39	4
40	2
41	8
42	9
43	12
44	1
45	3
46	6
47	4
48	7
49	11
50	10
51	2
52	5
53	8
54	13
55	14
56	2
57	9
58	15
59	7
60	1
61	3
62	4
63	11
64	13
65	12
66	16
67	1
68	5
69	14
70	6
71	8
72	10
73	9
74	4
75	17
76	2
77	10
78	3
79	18
80	11
81	16

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	3
7	1
8	2
9	4
10	1
11	5
12	3
13	6
14	1
15	2
16	4
17	7
18	2
19	3
20	5
21	6
22	4
23	5
24	7
25	8
26	1
27	3
28	5
29	2
30	6
31	4
32	9
33	10
34	7
35	1
36	3
37	8
38	11
39	4
40	2
41	8
42	9
43	12
44	1
45	3
46	6
47	4
48	7
49	11
50	10
51	2
52	5
53	8
54	13
55	14
56	2
57	9
58	15
59	7
60	1
61	3
62	4
63	11
64	13
65	12
66	16
67	1
68	5
69	14
70	6
71	8
72	10
73	9
74	4
75	17
76	2
77	10
78	3
79	18
80	11
81	16