A066369 - cp's OEIS frontend

A066369 Number of subsets of {1, ..., n} with no four terms in arithmetic progression.

n	a(n)
0	1
1	2
2	4
3	8
4	15
5	29
6	56
7	103
8	192
9	364
10	668
11	1222
12	2233
13	3987
14	7138
15	12903
16	22601
17	40200
18	71583
19	125184
20	218693
21	386543
22	670989
23	1164385
24	2021678
25	3462265
26	5930954
27	10189081
28	17266616
29	29654738
30	50912618
31	86017601
32	145327544
33	247555043
34	415598432
35	698015188

[1, 2, 4, 8, 15, 29, 56, 103, 192, 364, 668, 1222, 2233, 3987, 7138, 12903, 22601, 40200, 71583, 125184, 218693, 386543, 670989, 1164385, 2021678, 3462265, 5930954, 10189081, 17266616, 29654738, 50912618, 86017601, 145327544, 247555043, 415598432, 698015188]

cp's OEIS Frontend

A066369 Number of subsets of {1, ..., n} with no four terms in arithmetic progression.

Table of values

List of values