A248641 - cp's OEIS frontend

A248641 Lexicographically earliest positive sequence which does not contain a 4-term equidistant subsequence (a(n+k*d); k=0,1,2,3) in arithmetic progression.

n	a(n)
0	1
1	1
2	1
3	2
4	1
5	1
6	2
7	1
8	1
9	1
10	2
11	2
12	2
13	3
14	1
15	1
16	1
17	2
18	1
19	2
20	2
21	2
22	3
23	3
24	3
25	1
26	1
27	3
28	1
29	1
30	1
31	2
32	2
33	1
34	2
35	2
36	1
37	2
38	2
39	2
40	3
41	3
42	2
43	3
44	2
45	3
46	3
47	5
48	1
49	1
50	1
51	3
52	1
53	1
54	3
55	1
56	1
57	1
58	2
59	2
60	2
61	3
62	1
63	2
64	1
65	1
66	1
67	2
68	2
69	2
70	3
71	4
72	2
73	3
74	2
75	2
76	2
77	3
78	3
79	1
80	3
81	3
82	3
83	5
84	5
85	4
86	1
87	1
88	1
89	3
90	1
91	2
92	3
93	1
94	5
95	3
96	2
97	6
98	1
99	3
100	2
101	2
102	3
103	2
104	1
105	1
106	3
107	3
108	1
109	1
110	1

[1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 2, 2, 2, 3, 1, 1, 1, 2, 1, 2, 2, 2, 3, 3, 3, 1, 1, 3, 1, 1, 1, 2, 2, 1, 2, 2, 1, 2, 2, 2, 3, 3, 2, 3, 2, 3, 3, 5, 1, 1, 1, 3, 1, 1, 3, 1, 1, 1, 2, 2, 2, 3, 1, 2, 1, 1, 1, 2, 2, 2, 3, 4, 2, 3, 2, 2, 2, 3, 3, 1, 3, 3, 3, 5, 5, 4, 1, 1, 1, 3, 1, 2, 3, 1, 5, 3, 2, 6, 1, 3, 2, 2, 3, 2, 1, 1, 3, 3, 1, 1, 1]

cp's OEIS Frontend

A248641 Lexicographically earliest positive sequence which does not contain a 4-term equidistant subsequence (a(n+k*d); k=0,1,2,3) in arithmetic progression.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	2
4	1
5	1
6	2
7	1
8	1
9	1
10	2
11	2
12	2
13	3
14	1
15	1
16	1
17	2
18	1
19	2
20	2
21	2
22	3
23	3
24	3
25	1
26	1
27	3
28	1
29	1
30	1
31	2
32	2
33	1
34	2
35	2
36	1
37	2
38	2
39	2
40	3
41	3
42	2
43	3
44	2
45	3
46	3
47	5
48	1
49	1
50	1
51	3
52	1
53	1
54	3
55	1
56	1
57	1
58	2
59	2
60	2
61	3
62	1
63	2
64	1
65	1
66	1
67	2
68	2
69	2
70	3
71	4
72	2
73	3
74	2
75	2
76	2
77	3
78	3
79	1
80	3
81	3
82	3
83	5
84	5
85	4
86	1
87	1
88	1
89	3
90	1
91	2
92	3
93	1
94	5
95	3
96	2
97	6
98	1
99	3
100	2
101	2
102	3
103	2
104	1
105	1
106	3
107	3
108	1
109	1
110	1

n	a(n)
0	1
1	1
2	1
3	2
4	1
5	1
6	2
7	1
8	1
9	1
10	2
11	2
12	2
13	3
14	1
15	1
16	1
17	2
18	1
19	2
20	2
21	2
22	3
23	3
24	3
25	1
26	1
27	3
28	1
29	1
30	1
31	2
32	2
33	1
34	2
35	2
36	1
37	2
38	2
39	2
40	3
41	3
42	2
43	3
44	2
45	3
46	3
47	5
48	1
49	1
50	1
51	3
52	1
53	1
54	3
55	1
56	1
57	1
58	2
59	2
60	2
61	3
62	1
63	2
64	1
65	1
66	1
67	2
68	2
69	2
70	3
71	4
72	2
73	3
74	2
75	2
76	2
77	3
78	3
79	1
80	3
81	3
82	3
83	5
84	5
85	4
86	1
87	1
88	1
89	3
90	1
91	2
92	3
93	1
94	5
95	3
96	2
97	6
98	1
99	3
100	2
101	2
102	3
103	2
104	1
105	1
106	3
107	3
108	1
109	1
110	1

n	a(n)
0	1
1	1
2	1
3	2
4	1
5	1
6	2
7	1
8	1
9	1
10	2
11	2
12	2
13	3
14	1
15	1
16	1
17	2
18	1
19	2
20	2
21	2
22	3
23	3
24	3
25	1
26	1
27	3
28	1
29	1
30	1
31	2
32	2
33	1
34	2
35	2
36	1
37	2
38	2
39	2
40	3
41	3
42	2
43	3
44	2
45	3
46	3
47	5
48	1
49	1
50	1
51	3
52	1
53	1
54	3
55	1
56	1
57	1
58	2
59	2
60	2
61	3
62	1
63	2
64	1
65	1
66	1
67	2
68	2
69	2
70	3
71	4
72	2
73	3
74	2
75	2
76	2
77	3
78	3
79	1
80	3
81	3
82	3
83	5
84	5
85	4
86	1
87	1
88	1
89	3
90	1
91	2
92	3
93	1
94	5
95	3
96	2
97	6
98	1
99	3
100	2
101	2
102	3
103	2
104	1
105	1
106	3
107	3
108	1
109	1
110	1