A335699 - cp's OEIS frontend

A335699 Irregular tree read by rows: take the Stern-Brocot tree A007305(n)/A007306(n) and set a(n) = A007306(n) - A007305(n) mod 3.

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

[1, 0, 1, 2, 1, 0, 0, 2, 1, 1, 2, 2, 1, 0, 0, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 1, 0, 0, 2, 1, 0, 0, 2, 1, 2, 1, 0, 0, 0, 0, 1, 2, 1, 2, 0, 0, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 1, 0, 0, 2, 1, 1, 2, 2, 1, 0, 0, 2, 1, 2, 1, 0, 0, 2]

cp's OEIS Frontend

A335699 Irregular tree read by rows: take the Stern-Brocot tree A007305(n)/A007306(n) and set a(n) = A007306(n) - A007305(n) mod 3.

Table of values

List of values

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

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

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