A262347 - cp's OEIS frontend

A262347 Number of subsets of [1..n] of maximal size that are free of 3-term arithmetic progressions.

n	a(n)
0	1
1	1
2	1
3	3
4	2
5	1
6	4
7	10
8	25
9	4
10	24
11	7
12	25
13	6
14	1
15	4
16	14
17	43
18	97
19	220
20	2
21	18
22	62
23	232
24	2
25	33
26	2
27	12
28	36
29	106
30	1
31	11
32	2
33	4
34	14
35	40
36	2
37	4
38	86
39	307
40	20
41	1
42	4
43	14
44	41
45	99
46	266
47	674
48	1505
49	3510
50	7726
51	14
52	50
53	156
54	2
55	8
56	26
57	56
58	2
59	4
60	6
61	14
62	48
63	2
64	4
65	8
66	16
67	28
68	108
69	319
70	1046
71	4
72	26
73	82
74	1
75	2

[1, 1, 1, 3, 2, 1, 4, 10, 25, 4, 24, 7, 25, 6, 1, 4, 14, 43, 97, 220, 2, 18, 62, 232, 2, 33, 2, 12, 36, 106, 1, 11, 2, 4, 14, 40, 2, 4, 86, 307, 20, 1, 4, 14, 41, 99, 266, 674, 1505, 3510, 7726, 14, 50, 156, 2, 8, 26, 56, 2, 4, 6, 14, 48, 2, 4, 8, 16, 28, 108, 319, 1046, 4, 26, 82, 1, 2]

cp's OEIS Frontend

A262347 Number of subsets of [1..n] of maximal size that are free of 3-term arithmetic progressions.

Table of values

List of values