A348331 - cp's OEIS frontend

A348331 Lexicographically earliest sequence of positive integers such that for any n > 0, the sum of the indices k < n such that a(k) = a(n) is less than or equal to n.

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

[1, 1, 1, 2, 2, 1, 3, 3, 2, 4, 4, 1, 5, 5, 3, 6, 6, 2, 7, 7, 4, 8, 8, 1, 9, 9, 5, 10, 10, 3, 11, 11, 6, 12, 12, 2, 13, 13, 7, 14, 14, 4, 15, 15, 8, 16, 16, 1, 17, 17, 9, 18, 18, 5, 19, 19, 10, 20, 20, 3, 21, 21, 11, 22, 22, 6, 23, 23, 12, 24, 24, 2, 25, 25, 13]

cp's OEIS Frontend

A348331 Lexicographically earliest sequence of positive integers such that for any n > 0, the sum of the indices k < n such that a(k) = a(n) is less than or equal to n.

Table of values

List of values

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

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

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