A204617 - cp's OEIS frontend

A204617 Multiplicative with a(p^e) = p^(e-1)*H(p). H(2) = 1, H(p) = p - 1 if p == 1 (mod 4) and H(p) = p + 1 if p == 3 (mod 4).

n	a(n)
1	1
2	1
3	4
4	2
5	4
6	4
7	8
8	4
9	12
10	4
11	12
12	8
13	12
14	8
15	16
16	8
17	16
18	12
19	20
20	8
21	32
22	12
23	24
24	16
25	20
26	12
27	36
28	16
29	28
30	16
31	32
32	16
33	48
34	16
35	32
36	24
37	36
38	20
39	48
40	16
41	40
42	32
43	44
44	24
45	48
46	24
47	48
48	32
49	56
50	20
51	64
52	24
53	52
54	36
55	48
56	32
57	80
58	28
59	60
60	32
61	60
62	32
63	96
64	32
65	48
66	48
67	68
68	32

[1, 1, 4, 2, 4, 4, 8, 4, 12, 4, 12, 8, 12, 8, 16, 8, 16, 12, 20, 8, 32, 12, 24, 16, 20, 12, 36, 16, 28, 16, 32, 16, 48, 16, 32, 24, 36, 20, 48, 16, 40, 32, 44, 24, 48, 24, 48, 32, 56, 20, 64, 24, 52, 36, 48, 32, 80, 28, 60, 32, 60, 32, 96, 32, 48, 48, 68, 32]

cp's OEIS Frontend

A204617 Multiplicative with a(p^e) = p^(e-1)*H(p). H(2) = 1, H(p) = p - 1 if p == 1 (mod 4) and H(p) = p + 1 if p == 3 (mod 4).

Table of values

List of values

n	a(n)
1	1
2	1
3	4
4	2
5	4
6	4
7	8
8	4
9	12
10	4
11	12
12	8
13	12
14	8
15	16
16	8
17	16
18	12
19	20
20	8
21	32
22	12
23	24
24	16
25	20
26	12
27	36
28	16
29	28
30	16
31	32
32	16
33	48
34	16
35	32
36	24
37	36
38	20
39	48
40	16
41	40
42	32
43	44
44	24
45	48
46	24
47	48
48	32
49	56
50	20
51	64
52	24
53	52
54	36
55	48
56	32
57	80
58	28
59	60
60	32
61	60
62	32
63	96
64	32
65	48
66	48
67	68
68	32

n	a(n)
1	1
2	1
3	4
4	2
5	4
6	4
7	8
8	4
9	12
10	4
11	12
12	8
13	12
14	8
15	16
16	8
17	16
18	12
19	20
20	8
21	32
22	12
23	24
24	16
25	20
26	12
27	36
28	16
29	28
30	16
31	32
32	16
33	48
34	16
35	32
36	24
37	36
38	20
39	48
40	16
41	40
42	32
43	44
44	24
45	48
46	24
47	48
48	32
49	56
50	20
51	64
52	24
53	52
54	36
55	48
56	32
57	80
58	28
59	60
60	32
61	60
62	32
63	96
64	32
65	48
66	48
67	68
68	32

n	a(n)
1	1
2	1
3	4
4	2
5	4
6	4
7	8
8	4
9	12
10	4
11	12
12	8
13	12
14	8
15	16
16	8
17	16
18	12
19	20
20	8
21	32
22	12
23	24
24	16
25	20
26	12
27	36
28	16
29	28
30	16
31	32
32	16
33	48
34	16
35	32
36	24
37	36
38	20
39	48
40	16
41	40
42	32
43	44
44	24
45	48
46	24
47	48
48	32
49	56
50	20
51	64
52	24
53	52
54	36
55	48
56	32
57	80
58	28
59	60
60	32
61	60
62	32
63	96
64	32
65	48
66	48
67	68
68	32