A324331 - cp's OEIS frontend

A324331 a(n) = (n-1)^2 - phi(n)*sigma(n), where phi is A000010 and sigma is A000203.

n	a(n)
1	-1
2	-2
3	-4
4	-5
5	-8
6	1
7	-12
8	-11
9	-14
10	9
11	-20
12	9
13	-24
14	25
15	4
16	-23
17	-32
18	55
19	-36
20	25
21	16
22	81
23	-44
24	49
25	-44
26	121
27	-44
28	57
29	-56
30	265
31	-60
32	-47
33	64
34	225
35	4
36	133
37	-72
38	289
39	100
40	81
41	-80
42	529
43	-84
44	169
45	64
46	441
47	-92
48	225
49	-90
50	541
51	196
52	249
53	-104
54	649
55	36
56	145
57	256
58	729
59	-116
60	793

[-1, -2, -4, -5, -8, 1, -12, -11, -14, 9, -20, 9, -24, 25, 4, -23, -32, 55, -36, 25, 16, 81, -44, 49, -44, 121, -44, 57, -56, 265, -60, -47, 64, 225, 4, 133, -72, 289, 100, 81, -80, 529, -84, 169, 64, 441, -92, 225, -90, 541, 196, 249, -104, 649, 36, 145, 256, 729, -116, 793]

cp's OEIS Frontend

A324331 a(n) = (n-1)^2 - phi(n)*sigma(n), where phi is A000010 and sigma is A000203.

Table of values

List of values