A007503 - cp's OEIS frontend

A007503 Number of subgroups of dihedral group: sigma(n) + d(n).

n	a(n)
1	2
2	5
3	6
4	10
5	8
6	16
7	10
8	19
9	16
10	22
11	14
12	34
13	16
14	28
15	28
16	36
17	20
18	45
19	22
20	48
21	36
22	40
23	26
24	68
25	34
26	46
27	44
28	62
29	32
30	80
31	34
32	69
33	52
34	58
35	52
36	100
37	40
38	64
39	60
40	98
41	44
42	104
43	46
44	90
45	84
46	76
47	50
48	134
49	60
50	99
51	76
52	104
53	56
54	128
55	76
56	128
57	84
58	94
59	62
60	180
61	64
62	100
63	110
64	134

[2, 5, 6, 10, 8, 16, 10, 19, 16, 22, 14, 34, 16, 28, 28, 36, 20, 45, 22, 48, 36, 40, 26, 68, 34, 46, 44, 62, 32, 80, 34, 69, 52, 58, 52, 100, 40, 64, 60, 98, 44, 104, 46, 90, 84, 76, 50, 134, 60, 99, 76, 104, 56, 128, 76, 128, 84, 94, 62, 180, 64, 100, 110, 134]

cp's OEIS Frontend

A007503 Number of subgroups of dihedral group: sigma(n) + d(n).

Table of values

List of values

n	a(n)
1	2
2	5
3	6
4	10
5	8
6	16
7	10
8	19
9	16
10	22
11	14
12	34
13	16
14	28
15	28
16	36
17	20
18	45
19	22
20	48
21	36
22	40
23	26
24	68
25	34
26	46
27	44
28	62
29	32
30	80
31	34
32	69
33	52
34	58
35	52
36	100
37	40
38	64
39	60
40	98
41	44
42	104
43	46
44	90
45	84
46	76
47	50
48	134
49	60
50	99
51	76
52	104
53	56
54	128
55	76
56	128
57	84
58	94
59	62
60	180
61	64
62	100
63	110
64	134

n	a(n)
1	2
2	5
3	6
4	10
5	8
6	16
7	10
8	19
9	16
10	22
11	14
12	34
13	16
14	28
15	28
16	36
17	20
18	45
19	22
20	48
21	36
22	40
23	26
24	68
25	34
26	46
27	44
28	62
29	32
30	80
31	34
32	69
33	52
34	58
35	52
36	100
37	40
38	64
39	60
40	98
41	44
42	104
43	46
44	90
45	84
46	76
47	50
48	134
49	60
50	99
51	76
52	104
53	56
54	128
55	76
56	128
57	84
58	94
59	62
60	180
61	64
62	100
63	110
64	134

n	a(n)
1	2
2	5
3	6
4	10
5	8
6	16
7	10
8	19
9	16
10	22
11	14
12	34
13	16
14	28
15	28
16	36
17	20
18	45
19	22
20	48
21	36
22	40
23	26
24	68
25	34
26	46
27	44
28	62
29	32
30	80
31	34
32	69
33	52
34	58
35	52
36	100
37	40
38	64
39	60
40	98
41	44
42	104
43	46
44	90
45	84
46	76
47	50
48	134
49	60
50	99
51	76
52	104
53	56
54	128
55	76
56	128
57	84
58	94
59	62
60	180
61	64
62	100
63	110
64	134