A187266 - cp's OEIS frontend

A187266 Number of nonempty subsets of {1, 2, ..., n} with <=5 pairwise coprime elements.

n	a(n)
1	1
2	3
3	7
4	11
5	23
6	27
7	55
8	71
9	103
10	115
11	225
12	241
13	450
14	496
15	565
16	663
17	1170
18	1227
19	2055
20	2196
21	2473
22	2666
23	4257
24	4420
25	5709
26	6122
27	7223
28	7664
29	11449
30	11612
31	16776
32	18255
33	19991
34	21178
35	23718
36	24327
37	33888
38	35767
39	38853
40	40157
41	54455

[1, 3, 7, 11, 23, 27, 55, 71, 103, 115, 225, 241, 450, 496, 565, 663, 1170, 1227, 2055, 2196, 2473, 2666, 4257, 4420, 5709, 6122, 7223, 7664, 11449, 11612, 16776, 18255, 19991, 21178, 23718, 24327, 33888, 35767, 38853, 40157, 54455]

cp's OEIS Frontend

A187266 Number of nonempty subsets of {1, 2, ..., n} with <=5 pairwise coprime elements.

Table of values

List of values