A241480 - cp's OEIS frontend

A241480 Numbers k such that the GCD of the x's that satisfy sigma(x) = sigma(k) is not equal to 1.

n	a(n)
1	2
2	3
3	4
4	5
5	7
6	8
7	9
8	12
9	13
10	18
11	19
12	22
13	27
14	29
15	32
16	36
17	37
18	43
19	45
20	48
21	49
22	50
23	61
24	64
25	67
26	68
27	72
28	73
29	75
30	80
31	81
32	82
33	91
34	98
35	100
36	101
37	104
38	106
39	109
40	116
41	121
42	122
43	128
44	129
45	133
46	134
47	137
48	144
49	146
50	148
51	149
52	152
53	156
54	157
55	160
56	162
57	163
58	169
59	171
60	173

[2, 3, 4, 5, 7, 8, 9, 12, 13, 18, 19, 22, 27, 29, 32, 36, 37, 43, 45, 48, 49, 50, 61, 64, 67, 68, 72, 73, 75, 80, 81, 82, 91, 98, 100, 101, 104, 106, 109, 116, 121, 122, 128, 129, 133, 134, 137, 144, 146, 148, 149, 152, 156, 157, 160, 162, 163, 169, 171, 173]

cp's OEIS Frontend

A241480 Numbers k such that the GCD of the x's that satisfy sigma(x) = sigma(k) is not equal to 1.

Table of values

List of values

n	a(n)
1	2
2	3
3	4
4	5
5	7
6	8
7	9
8	12
9	13
10	18
11	19
12	22
13	27
14	29
15	32
16	36
17	37
18	43
19	45
20	48
21	49
22	50
23	61
24	64
25	67
26	68
27	72
28	73
29	75
30	80
31	81
32	82
33	91
34	98
35	100
36	101
37	104
38	106
39	109
40	116
41	121
42	122
43	128
44	129
45	133
46	134
47	137
48	144
49	146
50	148
51	149
52	152
53	156
54	157
55	160
56	162
57	163
58	169
59	171
60	173

n	a(n)
1	2
2	3
3	4
4	5
5	7
6	8
7	9
8	12
9	13
10	18
11	19
12	22
13	27
14	29
15	32
16	36
17	37
18	43
19	45
20	48
21	49
22	50
23	61
24	64
25	67
26	68
27	72
28	73
29	75
30	80
31	81
32	82
33	91
34	98
35	100
36	101
37	104
38	106
39	109
40	116
41	121
42	122
43	128
44	129
45	133
46	134
47	137
48	144
49	146
50	148
51	149
52	152
53	156
54	157
55	160
56	162
57	163
58	169
59	171
60	173

n	a(n)
1	2
2	3
3	4
4	5
5	7
6	8
7	9
8	12
9	13
10	18
11	19
12	22
13	27
14	29
15	32
16	36
17	37
18	43
19	45
20	48
21	49
22	50
23	61
24	64
25	67
26	68
27	72
28	73
29	75
30	80
31	81
32	82
33	91
34	98
35	100
36	101
37	104
38	106
39	109
40	116
41	121
42	122
43	128
44	129
45	133
46	134
47	137
48	144
49	146
50	148
51	149
52	152
53	156
54	157
55	160
56	162
57	163
58	169
59	171
60	173