A308831 - cp's OEIS frontend

A308831 Start with generation 0, which is the empty sequence. For generation N>=1, extend the existing sequence into a non-cyclic ternary de Bruijn sequence of order N. If more than one extension is possible, choose the lexicographically earliest.

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

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

cp's OEIS Frontend

A308831 Start with generation 0, which is the empty sequence. For generation N>=1, extend the existing sequence into a non-cyclic ternary de Bruijn sequence of order N. If more than one extension is possible, choose the lexicographically earliest.

Table of values

List of values

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

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

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