A124611 - cp's OEIS frontend

A124611 a(n) = sum of the positive integers k, k<=n, where each positive integer <=k and coprime to k is also coprime to n.

n	a(n)
1	1
2	3
3	6
4	7
5	15
6	9
7	28
8	21
9	21
10	17
11	66
12	21
13	91
14	27
15	21
16	73
17	153
18	39
19	190
20	37
21	33
22	53
23	276
24	63
25	85
26	69
27	138
28	55
29	435
30	33
31	496
32	273
33	54
34	107
35	50
36	129
37	703
38	129
39	72
40	107
41	861
42	51
43	946
44	97
45	96
46	179
47	1128
48	219
49	217
50	157
51	99
52	121
53	1431
54	273
55	80
56	153
57	123
58	269
59	1770
60	93
61	1891

[1, 3, 6, 7, 15, 9, 28, 21, 21, 17, 66, 21, 91, 27, 21, 73, 153, 39, 190, 37, 33, 53, 276, 63, 85, 69, 138, 55, 435, 33, 496, 273, 54, 107, 50, 129, 703, 129, 72, 107, 861, 51, 946, 97, 96, 179, 1128, 219, 217, 157, 99, 121, 1431, 273, 80, 153, 123, 269, 1770, 93, 1891]

cp's OEIS Frontend

A124611 a(n) = sum of the positive integers k, k<=n, where each positive integer <=k and coprime to k is also coprime to n.

Table of values

List of values