A306246 - cp's OEIS frontend

A306246 a(1) = 1, a(2) = 2, and for any n > 2, a(n) = o(n-1) + o(n-2) where o(k) is the number of occurrences of a(k) among a(1), ..., a(k).

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

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

cp's OEIS Frontend

A306246 a(1) = 1, a(2) = 2, and for any n > 2, a(n) = o(n-1) + o(n-2) where o(k) is the number of occurrences of a(k) among a(1), ..., a(k).

Table of values

List of values

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

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

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