A359728 - cp's OEIS frontend

A359728 a(1) = 1; a(n) is the smallest positive number not among the first k terms where k is the number of times a(n-1) has occurred.

n	a(n)
1	1
2	2
3	2
4	3
5	2
6	3
7	3
8	3
9	4
10	2
11	4
12	3
13	4
14	3
15	4
16	4
17	4
18	4
19	4
20	4
21	5
22	2
23	4
24	5
25	3
26	4
27	5
28	3
29	4
30	5
31	4
32	5
33	4
34	5
35	4
36	5
37	4
38	5
39	4
40	5
41	5
42	5
43	5
44	5
45	5
46	5
47	5
48	5
49	5
50	5
51	5
52	5
53	6
54	2
55	4
56	5
57	6
58	3
59	5
60	6
61	3
62	5
63	6
64	4
65	5
66	6
67	4
68	5
69	6
70	4
71	6
72	4
73	6
74	4
75	6
76	5
77	6
78	5
79	6
80	5
81	6
82	5
83	6
84	5
85	6
86	5
87	6

[1, 2, 2, 3, 2, 3, 3, 3, 4, 2, 4, 3, 4, 3, 4, 4, 4, 4, 4, 4, 5, 2, 4, 5, 3, 4, 5, 3, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 2, 4, 5, 6, 3, 5, 6, 3, 5, 6, 4, 5, 6, 4, 5, 6, 4, 6, 4, 6, 4, 6, 5, 6, 5, 6, 5, 6, 5, 6, 5, 6, 5, 6]

cp's OEIS Frontend

A359728 a(1) = 1; a(n) is the smallest positive number not among the first k terms where k is the number of times a(n-1) has occurred.

Table of values

List of values

n	a(n)
1	1
2	2
3	2
4	3
5	2
6	3
7	3
8	3
9	4
10	2
11	4
12	3
13	4
14	3
15	4
16	4
17	4
18	4
19	4
20	4
21	5
22	2
23	4
24	5
25	3
26	4
27	5
28	3
29	4
30	5
31	4
32	5
33	4
34	5
35	4
36	5
37	4
38	5
39	4
40	5
41	5
42	5
43	5
44	5
45	5
46	5
47	5
48	5
49	5
50	5
51	5
52	5
53	6
54	2
55	4
56	5
57	6
58	3
59	5
60	6
61	3
62	5
63	6
64	4
65	5
66	6
67	4
68	5
69	6
70	4
71	6
72	4
73	6
74	4
75	6
76	5
77	6
78	5
79	6
80	5
81	6
82	5
83	6
84	5
85	6
86	5
87	6

n	a(n)
1	1
2	2
3	2
4	3
5	2
6	3
7	3
8	3
9	4
10	2
11	4
12	3
13	4
14	3
15	4
16	4
17	4
18	4
19	4
20	4
21	5
22	2
23	4
24	5
25	3
26	4
27	5
28	3
29	4
30	5
31	4
32	5
33	4
34	5
35	4
36	5
37	4
38	5
39	4
40	5
41	5
42	5
43	5
44	5
45	5
46	5
47	5
48	5
49	5
50	5
51	5
52	5
53	6
54	2
55	4
56	5
57	6
58	3
59	5
60	6
61	3
62	5
63	6
64	4
65	5
66	6
67	4
68	5
69	6
70	4
71	6
72	4
73	6
74	4
75	6
76	5
77	6
78	5
79	6
80	5
81	6
82	5
83	6
84	5
85	6
86	5
87	6

n	a(n)
1	1
2	2
3	2
4	3
5	2
6	3
7	3
8	3
9	4
10	2
11	4
12	3
13	4
14	3
15	4
16	4
17	4
18	4
19	4
20	4
21	5
22	2
23	4
24	5
25	3
26	4
27	5
28	3
29	4
30	5
31	4
32	5
33	4
34	5
35	4
36	5
37	4
38	5
39	4
40	5
41	5
42	5
43	5
44	5
45	5
46	5
47	5
48	5
49	5
50	5
51	5
52	5
53	6
54	2
55	4
56	5
57	6
58	3
59	5
60	6
61	3
62	5
63	6
64	4
65	5
66	6
67	4
68	5
69	6
70	4
71	6
72	4
73	6
74	4
75	6
76	5
77	6
78	5
79	6
80	5
81	6
82	5
83	6
84	5
85	6
86	5
87	6