A359384 - cp's OEIS frontend

A359384 a(1) = 0. If a(n-1) is a first occurrence, a(n) = A000120(a(n-1)). Otherwise, if a(n-1) is a repeat of a prior terms, a(n) = number of indices j < n such that a(j) = a(n-1).

n	a(n)
1	0
2	0
3	2
4	1
5	1
6	2
7	2
8	3
9	2
10	4
11	1
12	3
13	2
14	5
15	2
16	6
17	2
18	7
19	3
20	3
21	4
22	2
23	8
24	1
25	4
26	3
27	5
28	2
29	9
30	2
31	10
32	2
33	11
34	3
35	6
36	2
37	12
38	2
39	13
40	3
41	7
42	2
43	14
44	3
45	8
46	2
47	15
48	4
49	4
50	5
51	3
52	9
53	2
54	16
55	1
56	5
57	4
58	6
59	3
60	10
61	2
62	17
63	2
64	18
65	2
66	19
67	3
68	11
69	2
70	20
71	2
72	21
73	3
74	12
75	2
76	22
77	3
78	13
79	2
80	23
81	4

[0, 0, 2, 1, 1, 2, 2, 3, 2, 4, 1, 3, 2, 5, 2, 6, 2, 7, 3, 3, 4, 2, 8, 1, 4, 3, 5, 2, 9, 2, 10, 2, 11, 3, 6, 2, 12, 2, 13, 3, 7, 2, 14, 3, 8, 2, 15, 4, 4, 5, 3, 9, 2, 16, 1, 5, 4, 6, 3, 10, 2, 17, 2, 18, 2, 19, 3, 11, 2, 20, 2, 21, 3, 12, 2, 22, 3, 13, 2, 23, 4]

cp's OEIS Frontend

A359384 a(1) = 0. If a(n-1) is a first occurrence, a(n) = A000120(a(n-1)). Otherwise, if a(n-1) is a repeat of a prior terms, a(n) = number of indices j < n such that a(j) = a(n-1).

Table of values

List of values

n	a(n)
1	0
2	0
3	2
4	1
5	1
6	2
7	2
8	3
9	2
10	4
11	1
12	3
13	2
14	5
15	2
16	6
17	2
18	7
19	3
20	3
21	4
22	2
23	8
24	1
25	4
26	3
27	5
28	2
29	9
30	2
31	10
32	2
33	11
34	3
35	6
36	2
37	12
38	2
39	13
40	3
41	7
42	2
43	14
44	3
45	8
46	2
47	15
48	4
49	4
50	5
51	3
52	9
53	2
54	16
55	1
56	5
57	4
58	6
59	3
60	10
61	2
62	17
63	2
64	18
65	2
66	19
67	3
68	11
69	2
70	20
71	2
72	21
73	3
74	12
75	2
76	22
77	3
78	13
79	2
80	23
81	4

n	a(n)
1	0
2	0
3	2
4	1
5	1
6	2
7	2
8	3
9	2
10	4
11	1
12	3
13	2
14	5
15	2
16	6
17	2
18	7
19	3
20	3
21	4
22	2
23	8
24	1
25	4
26	3
27	5
28	2
29	9
30	2
31	10
32	2
33	11
34	3
35	6
36	2
37	12
38	2
39	13
40	3
41	7
42	2
43	14
44	3
45	8
46	2
47	15
48	4
49	4
50	5
51	3
52	9
53	2
54	16
55	1
56	5
57	4
58	6
59	3
60	10
61	2
62	17
63	2
64	18
65	2
66	19
67	3
68	11
69	2
70	20
71	2
72	21
73	3
74	12
75	2
76	22
77	3
78	13
79	2
80	23
81	4

n	a(n)
1	0
2	0
3	2
4	1
5	1
6	2
7	2
8	3
9	2
10	4
11	1
12	3
13	2
14	5
15	2
16	6
17	2
18	7
19	3
20	3
21	4
22	2
23	8
24	1
25	4
26	3
27	5
28	2
29	9
30	2
31	10
32	2
33	11
34	3
35	6
36	2
37	12
38	2
39	13
40	3
41	7
42	2
43	14
44	3
45	8
46	2
47	15
48	4
49	4
50	5
51	3
52	9
53	2
54	16
55	1
56	5
57	4
58	6
59	3
60	10
61	2
62	17
63	2
64	18
65	2
66	19
67	3
68	11
69	2
70	20
71	2
72	21
73	3
74	12
75	2
76	22
77	3
78	13
79	2
80	23
81	4