A378283 - cp's OEIS frontend

A378283 Unique sequence s starting with 1,1,2,1 such that if r(r(r(s) = s and r(s) != s and r(r(s) != s, where r(#) denotes the runlength sequence of a sequence #.

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

[1, 1, 2, 1, 2, 2, 1, 2, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 2, 1, 1, 2, 1, 2, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 2, 1, 2, 1, 1, 2, 2, 1, 2, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2, 1, 1, 2, 2, 1, 2, 2, 1, 2, 1, 1]

cp's OEIS Frontend

A378283 Unique sequence s starting with 1,1,2,1 such that if r(r(r(s) = s and r(s) != s and r(r(s) != s, where r(#) denotes the runlength sequence of a sequence #.

Table of values

List of values

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

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

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