A350768 - cp's OEIS frontend

A350768 a(1)=1. Thereafter, if a(n) is a term that has appeared exactly k times prior to and including itself then a(n+1) is the number of terms prior to and including a(n) which have appeared exactly k times.

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

[1, 1, 2, 1, 3, 2, 2, 6, 2, 4, 3, 2, 5, 3, 6, 2, 6, 9, 3, 4, 2, 7, 3, 5, 4, 9, 4, 4, 10, 2, 8, 3, 6, 4, 12, 4, 7, 6, 5, 6, 12, 6, 14, 3, 21, 4, 16, 5, 4, 9, 6, 16, 6, 18, 5, 5, 6, 10, 8, 10, 9, 4, 20, 4, 11, 5, 14, 10, 8, 6, 22, 5, 16, 9, 5, 9, 6, 12, 12, 8, 12]

cp's OEIS Frontend

A350768 a(1)=1. Thereafter, if a(n) is a term that has appeared exactly k times prior to and including itself then a(n+1) is the number of terms prior to and including a(n) which have appeared exactly k times.

Table of values

List of values

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

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

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