A347564 - cp's OEIS frontend

A347564 Record the number of distinct terms seen thus far, then the number of distinct terms seen only once, then twice, and so on until recording a zero; whereupon repeat the count.

n	a(n)
0	0
1	1
2	2
3	0
4	3
5	3
6	2
7	0
8	4
9	2
10	1
11	2
12	1
13	0
14	5
15	2
16	1
17	0
18	6
19	3
20	0
21	7
22	4
23	1
24	1
25	0
26	8
27	4
28	0
29	9
30	5
31	1
32	2
33	0
34	10
35	5
36	0
37	11
38	6
39	1
40	3
41	1
42	0
43	12
44	6
45	0
46	13
47	7
48	1
49	3
50	0
51	14
52	7
53	0
54	15
55	8
56	1
57	4
58	1
59	1
60	1
61	0
62	16
63	8
64	0
65	17
66	9
67	1
68	4
69	0
70	18
71	9
72	0
73	19
74	10
75	1
76	5
77	1
78	2
79	0
80	20
81	10
82	0

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

cp's OEIS Frontend

A347564 Record the number of distinct terms seen thus far, then the number of distinct terms seen only once, then twice, and so on until recording a zero; whereupon repeat the count.

Table of values

List of values

n	a(n)
0	0
1	1
2	2
3	0
4	3
5	3
6	2
7	0
8	4
9	2
10	1
11	2
12	1
13	0
14	5
15	2
16	1
17	0
18	6
19	3
20	0
21	7
22	4
23	1
24	1
25	0
26	8
27	4
28	0
29	9
30	5
31	1
32	2
33	0
34	10
35	5
36	0
37	11
38	6
39	1
40	3
41	1
42	0
43	12
44	6
45	0
46	13
47	7
48	1
49	3
50	0
51	14
52	7
53	0
54	15
55	8
56	1
57	4
58	1
59	1
60	1
61	0
62	16
63	8
64	0
65	17
66	9
67	1
68	4
69	0
70	18
71	9
72	0
73	19
74	10
75	1
76	5
77	1
78	2
79	0
80	20
81	10
82	0

n	a(n)
0	0
1	1
2	2
3	0
4	3
5	3
6	2
7	0
8	4
9	2
10	1
11	2
12	1
13	0
14	5
15	2
16	1
17	0
18	6
19	3
20	0
21	7
22	4
23	1
24	1
25	0
26	8
27	4
28	0
29	9
30	5
31	1
32	2
33	0
34	10
35	5
36	0
37	11
38	6
39	1
40	3
41	1
42	0
43	12
44	6
45	0
46	13
47	7
48	1
49	3
50	0
51	14
52	7
53	0
54	15
55	8
56	1
57	4
58	1
59	1
60	1
61	0
62	16
63	8
64	0
65	17
66	9
67	1
68	4
69	0
70	18
71	9
72	0
73	19
74	10
75	1
76	5
77	1
78	2
79	0
80	20
81	10
82	0

n	a(n)
0	0
1	1
2	2
3	0
4	3
5	3
6	2
7	0
8	4
9	2
10	1
11	2
12	1
13	0
14	5
15	2
16	1
17	0
18	6
19	3
20	0
21	7
22	4
23	1
24	1
25	0
26	8
27	4
28	0
29	9
30	5
31	1
32	2
33	0
34	10
35	5
36	0
37	11
38	6
39	1
40	3
41	1
42	0
43	12
44	6
45	0
46	13
47	7
48	1
49	3
50	0
51	14
52	7
53	0
54	15
55	8
56	1
57	4
58	1
59	1
60	1
61	0
62	16
63	8
64	0
65	17
66	9
67	1
68	4
69	0
70	18
71	9
72	0
73	19
74	10
75	1
76	5
77	1
78	2
79	0
80	20
81	10
82	0