A381629 - cp's OEIS frontend

A381629 Lexicographically earliest sequence of positive integers such that no subsequence of terms at indices in arithmetic progression form an arithmetic progression in any order.

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

[1, 1, 2, 1, 1, 2, 2, 4, 4, 1, 1, 2, 1, 1, 2, 2, 4, 4, 2, 4, 4, 5, 5, 8, 5, 5, 9, 9, 4, 2, 5, 11, 2, 2, 4, 1, 1, 5, 1, 1, 10, 2, 2, 4, 1, 1, 4, 4, 10, 10, 4, 10, 10, 12, 2, 4, 1, 2, 5, 4, 5, 10, 4, 2, 8, 2, 10, 5, 5, 10, 5, 13, 12, 13, 2, 5, 10, 5, 10, 10, 13, 5]

cp's OEIS Frontend

A381629 Lexicographically earliest sequence of positive integers such that no subsequence of terms at indices in arithmetic progression form an arithmetic progression in any order.

Table of values

List of values

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

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

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