A248881 - cp's OEIS frontend

A248881 Numbers n such that lambda(sum of even divisors of 2n) = lambda(sum of odd divisors of 2n) where lambda is the Carmichael function (A002322).

n	a(n)
1	1
2	3
3	5
4	6
5	9
6	11
7	13
8	17
9	18
10	19
11	25
12	26
13	27
14	29
15	36
16	37
17	38
18	41
19	43
20	45
21	49
22	50
23	53
24	54
25	59
26	61
27	63
28	65
29	67
30	68
31	72
32	73
33	74
34	75
35	81
36	82
37	83
38	85
39	86
40	87
41	89
42	90
43	95
44	97
45	98
46	99
47	100
48	101
49	103
50	107
51	109
52	113
53	117
54	121
55	122
56	125
57	126
58	130
59	131
60	134
61	137
62	139

[1, 3, 5, 6, 9, 11, 13, 17, 18, 19, 25, 26, 27, 29, 36, 37, 38, 41, 43, 45, 49, 50, 53, 54, 59, 61, 63, 65, 67, 68, 72, 73, 74, 75, 81, 82, 83, 85, 86, 87, 89, 90, 95, 97, 98, 99, 100, 101, 103, 107, 109, 113, 117, 121, 122, 125, 126, 130, 131, 134, 137, 139]

cp's OEIS Frontend

A248881 Numbers n such that lambda(sum of even divisors of 2n) = lambda(sum of odd divisors of 2n) where lambda is the Carmichael function (A002322).

Table of values

List of values

n	a(n)
1	1
2	3
3	5
4	6
5	9
6	11
7	13
8	17
9	18
10	19
11	25
12	26
13	27
14	29
15	36
16	37
17	38
18	41
19	43
20	45
21	49
22	50
23	53
24	54
25	59
26	61
27	63
28	65
29	67
30	68
31	72
32	73
33	74
34	75
35	81
36	82
37	83
38	85
39	86
40	87
41	89
42	90
43	95
44	97
45	98
46	99
47	100
48	101
49	103
50	107
51	109
52	113
53	117
54	121
55	122
56	125
57	126
58	130
59	131
60	134
61	137
62	139

n	a(n)
1	1
2	3
3	5
4	6
5	9
6	11
7	13
8	17
9	18
10	19
11	25
12	26
13	27
14	29
15	36
16	37
17	38
18	41
19	43
20	45
21	49
22	50
23	53
24	54
25	59
26	61
27	63
28	65
29	67
30	68
31	72
32	73
33	74
34	75
35	81
36	82
37	83
38	85
39	86
40	87
41	89
42	90
43	95
44	97
45	98
46	99
47	100
48	101
49	103
50	107
51	109
52	113
53	117
54	121
55	122
56	125
57	126
58	130
59	131
60	134
61	137
62	139

n	a(n)
1	1
2	3
3	5
4	6
5	9
6	11
7	13
8	17
9	18
10	19
11	25
12	26
13	27
14	29
15	36
16	37
17	38
18	41
19	43
20	45
21	49
22	50
23	53
24	54
25	59
26	61
27	63
28	65
29	67
30	68
31	72
32	73
33	74
34	75
35	81
36	82
37	83
38	85
39	86
40	87
41	89
42	90
43	95
44	97
45	98
46	99
47	100
48	101
49	103
50	107
51	109
52	113
53	117
54	121
55	122
56	125
57	126
58	130
59	131
60	134
61	137
62	139