A380106 - cp's OEIS frontend

A380106 a(1) = 0; for n >= 1, if there exists an m < n such that a(m) = a(n), take the largest such m and let a(n+1) be the number of runs in the subsequence a(m)..a(n-1). Otherwise, a(n+1) = 0.

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

[0, 0, 1, 0, 2, 0, 2, 2, 1, 5, 0, 4, 0, 2, 6, 0, 3, 0, 2, 5, 10, 0, 4, 11, 0, 3, 9, 0, 3, 3, 1, 21, 0, 4, 10, 13, 0, 4, 4, 1, 8, 0, 4, 4, 1, 4, 2, 25, 0, 6, 32, 0, 3, 21, 20, 0, 4, 11, 31, 0, 4, 4, 1, 17, 0, 4, 4, 1, 4, 2, 21, 15, 0, 7, 0, 2, 6, 25, 28, 0, 5, 56]

cp's OEIS Frontend

A380106 a(1) = 0; for n >= 1, if there exists an m < n such that a(m) = a(n), take the largest such m and let a(n+1) be the number of runs in the subsequence a(m)..a(n-1). Otherwise, a(n+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	5
11	0
12	4
13	0
14	2
15	6
16	0
17	3
18	0
19	2
20	5
21	10
22	0
23	4
24	11
25	0
26	3
27	9
28	0
29	3
30	3
31	1
32	21
33	0
34	4
35	10
36	13
37	0
38	4
39	4
40	1
41	8
42	0
43	4
44	4
45	1
46	4
47	2
48	25
49	0
50	6
51	32
52	0
53	3
54	21
55	20
56	0
57	4
58	11
59	31
60	0
61	4
62	4
63	1
64	17
65	0
66	4
67	4
68	1
69	4
70	2
71	21
72	15
73	0
74	7
75	0
76	2
77	6
78	25
79	28
80	0
81	5
82	56

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

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