A320426 - cp's OEIS frontend

A320426 Number of nonempty pairwise coprime subsets of {1,...,n}, where a single number is not considered to be pairwise coprime unless it is equal to 1.

n	a(n)
1	1
2	2
3	5
4	8
5	19
6	22
7	49
8	64
9	95
10	106
11	221
12	236
13	483
14	530
15	601
16	712
17	1439
18	1502
19	3021
20	3212
21	3595
22	3850
23	7721
24	7976
25	11143
26	11878
27	14629
28	15460
29	30947
30	31202
31	62433
32	69856
33	76127
34	80222
35	89821
36	91612
37	183259
38	192602
39	208601
40	214232
41	428503
42	431574
43	863189

[1, 2, 5, 8, 19, 22, 49, 64, 95, 106, 221, 236, 483, 530, 601, 712, 1439, 1502, 3021, 3212, 3595, 3850, 7721, 7976, 11143, 11878, 14629, 15460, 30947, 31202, 62433, 69856, 76127, 80222, 89821, 91612, 183259, 192602, 208601, 214232, 428503, 431574, 863189]

cp's OEIS Frontend

A320426 Number of nonempty pairwise coprime subsets of {1,...,n}, where a single number is not considered to be pairwise coprime unless it is equal to 1.

Table of values

List of values