A317223 - cp's OEIS frontend

A317223 a(0) = 0, a(1) = 1; for n >= 2, a(n) = freq(a(freq(a(n-1),n)),n) where freq(i, j) is the number of times i appears in the terms a(0) .. a(j-1).

n	a(n)
0	0
1	1
2	1
3	2
4	2
5	2
6	3
7	2
8	4
9	2
10	5
11	2
12	1
13	6
14	3
15	3
16	6
17	3
18	6
19	6
20	6
21	6
22	4
23	3
24	6
25	6
26	2
27	7
28	3
29	6
30	7
31	3
32	7
33	7
34	7
35	7
36	7
37	7
38	2
39	2
40	9
41	3
42	2
43	1
44	10
45	4
46	10
47	4
48	10
49	10
50	10
51	10
52	8
53	4
54	10
55	10
56	5
57	4
58	8
59	4
60	10
61	10
62	2
63	11
64	4
65	8
66	11
67	4
68	11
69	11
70	11
71	11
72	8
73	11
74	11
75	9
76	4
77	2
78	4
79	12
80	4
81	4
82	9
83	12
84	4
85	8
86	12
87	12
88	12
89	12
90	8
91	8
92	12
93	12
94	14
95	4
96	8

[0, 1, 1, 2, 2, 2, 3, 2, 4, 2, 5, 2, 1, 6, 3, 3, 6, 3, 6, 6, 6, 6, 4, 3, 6, 6, 2, 7, 3, 6, 7, 3, 7, 7, 7, 7, 7, 7, 2, 2, 9, 3, 2, 1, 10, 4, 10, 4, 10, 10, 10, 10, 8, 4, 10, 10, 5, 4, 8, 4, 10, 10, 2, 11, 4, 8, 11, 4, 11, 11, 11, 11, 8, 11, 11, 9, 4, 2, 4, 12, 4, 4, 9, 12, 4, 8, 12, 12, 12, 12, 8, 8, 12, 12, 14, 4, 8]

cp's OEIS Frontend

A317223 a(0) = 0, a(1) = 1; for n >= 2, a(n) = freq(a(freq(a(n-1),n)),n) where freq(i, j) is the number of times i appears in the terms a(0) .. a(j-1).

Table of values

List of values

n	a(n)
0	0
1	1
2	1
3	2
4	2
5	2
6	3
7	2
8	4
9	2
10	5
11	2
12	1
13	6
14	3
15	3
16	6
17	3
18	6
19	6
20	6
21	6
22	4
23	3
24	6
25	6
26	2
27	7
28	3
29	6
30	7
31	3
32	7
33	7
34	7
35	7
36	7
37	7
38	2
39	2
40	9
41	3
42	2
43	1
44	10
45	4
46	10
47	4
48	10
49	10
50	10
51	10
52	8
53	4
54	10
55	10
56	5
57	4
58	8
59	4
60	10
61	10
62	2
63	11
64	4
65	8
66	11
67	4
68	11
69	11
70	11
71	11
72	8
73	11
74	11
75	9
76	4
77	2
78	4
79	12
80	4
81	4
82	9
83	12
84	4
85	8
86	12
87	12
88	12
89	12
90	8
91	8
92	12
93	12
94	14
95	4
96	8

n	a(n)
0	0
1	1
2	1
3	2
4	2
5	2
6	3
7	2
8	4
9	2
10	5
11	2
12	1
13	6
14	3
15	3
16	6
17	3
18	6
19	6
20	6
21	6
22	4
23	3
24	6
25	6
26	2
27	7
28	3
29	6
30	7
31	3
32	7
33	7
34	7
35	7
36	7
37	7
38	2
39	2
40	9
41	3
42	2
43	1
44	10
45	4
46	10
47	4
48	10
49	10
50	10
51	10
52	8
53	4
54	10
55	10
56	5
57	4
58	8
59	4
60	10
61	10
62	2
63	11
64	4
65	8
66	11
67	4
68	11
69	11
70	11
71	11
72	8
73	11
74	11
75	9
76	4
77	2
78	4
79	12
80	4
81	4
82	9
83	12
84	4
85	8
86	12
87	12
88	12
89	12
90	8
91	8
92	12
93	12
94	14
95	4
96	8

n	a(n)
0	0
1	1
2	1
3	2
4	2
5	2
6	3
7	2
8	4
9	2
10	5
11	2
12	1
13	6
14	3
15	3
16	6
17	3
18	6
19	6
20	6
21	6
22	4
23	3
24	6
25	6
26	2
27	7
28	3
29	6
30	7
31	3
32	7
33	7
34	7
35	7
36	7
37	7
38	2
39	2
40	9
41	3
42	2
43	1
44	10
45	4
46	10
47	4
48	10
49	10
50	10
51	10
52	8
53	4
54	10
55	10
56	5
57	4
58	8
59	4
60	10
61	10
62	2
63	11
64	4
65	8
66	11
67	4
68	11
69	11
70	11
71	11
72	8
73	11
74	11
75	9
76	4
77	2
78	4
79	12
80	4
81	4
82	9
83	12
84	4
85	8
86	12
87	12
88	12
89	12
90	8
91	8
92	12
93	12
94	14
95	4
96	8