A351456 - cp's OEIS frontend

A351456 a(n) = A003958(sigma(A003961(n))), where A003958 is multiplicative with a(p^e) = (p-1)^e, A003961 multiplicative with a(prime(k)^e) = prime(1+k)^e, and sigma is the sum of divisors function.

n	a(n)
1	1
2	1
3	2
4	12
5	1
6	2
7	2
8	4
9	30
10	1
11	6
12	24
13	4
14	2
15	2
16	100
17	4
18	30
19	2
20	12
21	4
22	6
23	8
24	8
25	36
26	4
27	24
28	24
29	1
30	2
31	18
32	72
33	12
34	4
35	2
36	360
37	12
38	2
39	8
40	4
41	10
42	4
43	2
44	72
45	30
46	8
47	8
48	200
49	108
50	36
51	8
52	48
53	8
54	24
55	6
56	8
57	4
58	1
59	30
60	24
61	16
62	18
63	60
64	1092
65	4
66	12
67	4
68	48
69	16
70	2
71	36
72	120
73	4
74	12
75	72
76	24
77	12
78	8
79	12
80	100
81	700
82	10
83	16
84	48
85	4
86	2
87	2
88	24

[1, 1, 2, 12, 1, 2, 2, 4, 30, 1, 6, 24, 4, 2, 2, 100, 4, 30, 2, 12, 4, 6, 8, 8, 36, 4, 24, 24, 1, 2, 18, 72, 12, 4, 2, 360, 12, 2, 8, 4, 10, 4, 2, 72, 30, 8, 8, 200, 108, 36, 8, 48, 8, 24, 6, 8, 4, 1, 30, 24, 16, 18, 60, 1092, 4, 12, 4, 48, 16, 2, 36, 120, 4, 12, 72, 24, 12, 8, 12, 100, 700, 10, 16, 48, 4, 2, 2, 24]

cp's OEIS Frontend

A351456 a(n) = A003958(sigma(A003961(n))), where A003958 is multiplicative with a(p^e) = (p-1)^e, A003961 multiplicative with a(prime(k)^e) = prime(1+k)^e, and sigma is the sum of divisors function.

Table of values

List of values