A293866 - cp's OEIS frontend

A293866 For n > 2: when computing A229037(n), there are up to floor((n-1)/2) forbidden values (i.e. values that would lead to an arithmetic progression); a(n) = greatest forbidden value when computing A229037(n).

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

[1, 3, 3, 1, 3, 3, 6, 6, 7, 7, 7, 7, 7, 7, 7, 6, 6, 7, 7, 7, 7, 7, 11, 11, 12, 13, 14, 12, 13, 14, 14, 15, 16, 14, 15, 16, 16, 17, 17, 16, 17, 17, 14, 15, 16, 16, 17, 17, 16, 17, 17, 12, 13, 14, 13, 13, 14, 14, 15, 16, 16, 16, 16, 18, 17, 24, 17, 21, 21, 18, 21]

cp's OEIS Frontend

A293866 For n > 2: when computing A229037(n), there are up to floor((n-1)/2) forbidden values (i.e. values that would lead to an arithmetic progression); a(n) = greatest forbidden value when computing A229037(n).

Table of values

List of values

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

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

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