A268755 - cp's OEIS frontend

A268755 Variant of A181391: For n >= 1, if there exists an m < n such that a(m) = a(n), take the largest such m and set a(n+1) = #{a(m), a(m+1), ..., a(n)}; otherwise, a(n+1) = 0. Start with a(1) = 0.

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

[0, 0, 1, 0, 2, 0, 2, 2, 1, 3, 0, 4, 0, 2, 5, 0, 3, 5, 3, 2, 4, 5, 4, 2, 3, 4, 3, 2, 3, 2, 2, 1, 6, 0, 7, 0, 2, 5, 8, 0, 4, 9, 0, 3, 10, 0, 3, 3, 1, 11, 0, 4, 7, 11, 4, 3, 6, 12, 0, 7, 7, 1, 8, 11, 9, 11, 2, 13, 0, 8, 6, 10, 13, 5, 14, 0, 7, 12, 13, 6, 8, 9, 12]

cp's OEIS Frontend

A268755 Variant of A181391: For n >= 1, if there exists an m < n such that a(m) = a(n), take the largest such m and set a(n+1) = #{a(m), a(m+1), ..., a(n)}; otherwise, a(n+1) = 0. Start with a(1) = 0.

Table of values

List of values

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

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

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