A325313 - cp's OEIS frontend

A325313 a(n) = A048250(n) - n, where A048250(n) is the sum of squarefree divisors of n.

n	a(n)
1	0
2	1
3	1
4	-1
5	1
6	6
7	1
8	-5
9	-5
10	8
11	1
12	0
13	1
14	10
15	9
16	-13
17	1
18	-6
19	1
20	-2
21	11
22	14
23	1
24	-12
25	-19
26	16
27	-23
28	-4
29	1
30	42
31	1
32	-29
33	15
34	20
35	13
36	-24
37	1
38	22
39	17
40	-22
41	1
42	54
43	1
44	-8
45	-21
46	26
47	1
48	-36
49	-41
50	-32
51	21
52	-10
53	1
54	-42
55	17
56	-32
57	23
58	32
59	1
60	12
61	1
62	34
63	-31
64	-61
65	19
66	78
67	1
68	-14
69	27
70	74
71	1
72	-60
73	1
74	40
75	-51
76	-16
77	19
78	90
79	1
80	-62
81	-77
82	44
83	1
84	12
85	23
86	46

[0, 1, 1, -1, 1, 6, 1, -5, -5, 8, 1, 0, 1, 10, 9, -13, 1, -6, 1, -2, 11, 14, 1, -12, -19, 16, -23, -4, 1, 42, 1, -29, 15, 20, 13, -24, 1, 22, 17, -22, 1, 54, 1, -8, -21, 26, 1, -36, -41, -32, 21, -10, 1, -42, 17, -32, 23, 32, 1, 12, 1, 34, -31, -61, 19, 78, 1, -14, 27, 74, 1, -60, 1, 40, -51, -16, 19, 90, 1, -62, -77, 44, 1, 12, 23, 46]

cp's OEIS Frontend

A325313 a(n) = A048250(n) - n, where A048250(n) is the sum of squarefree divisors of n.

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	-1
5	1
6	6
7	1
8	-5
9	-5
10	8
11	1
12	0
13	1
14	10
15	9
16	-13
17	1
18	-6
19	1
20	-2
21	11
22	14
23	1
24	-12
25	-19
26	16
27	-23
28	-4
29	1
30	42
31	1
32	-29
33	15
34	20
35	13
36	-24
37	1
38	22
39	17
40	-22
41	1
42	54
43	1
44	-8
45	-21
46	26
47	1
48	-36
49	-41
50	-32
51	21
52	-10
53	1
54	-42
55	17
56	-32
57	23
58	32
59	1
60	12
61	1
62	34
63	-31
64	-61
65	19
66	78
67	1
68	-14
69	27
70	74
71	1
72	-60
73	1
74	40
75	-51
76	-16
77	19
78	90
79	1
80	-62
81	-77
82	44
83	1
84	12
85	23
86	46

n	a(n)
1	0
2	1
3	1
4	-1
5	1
6	6
7	1
8	-5
9	-5
10	8
11	1
12	0
13	1
14	10
15	9
16	-13
17	1
18	-6
19	1
20	-2
21	11
22	14
23	1
24	-12
25	-19
26	16
27	-23
28	-4
29	1
30	42
31	1
32	-29
33	15
34	20
35	13
36	-24
37	1
38	22
39	17
40	-22
41	1
42	54
43	1
44	-8
45	-21
46	26
47	1
48	-36
49	-41
50	-32
51	21
52	-10
53	1
54	-42
55	17
56	-32
57	23
58	32
59	1
60	12
61	1
62	34
63	-31
64	-61
65	19
66	78
67	1
68	-14
69	27
70	74
71	1
72	-60
73	1
74	40
75	-51
76	-16
77	19
78	90
79	1
80	-62
81	-77
82	44
83	1
84	12
85	23
86	46

n	a(n)
1	0
2	1
3	1
4	-1
5	1
6	6
7	1
8	-5
9	-5
10	8
11	1
12	0
13	1
14	10
15	9
16	-13
17	1
18	-6
19	1
20	-2
21	11
22	14
23	1
24	-12
25	-19
26	16
27	-23
28	-4
29	1
30	42
31	1
32	-29
33	15
34	20
35	13
36	-24
37	1
38	22
39	17
40	-22
41	1
42	54
43	1
44	-8
45	-21
46	26
47	1
48	-36
49	-41
50	-32
51	21
52	-10
53	1
54	-42
55	17
56	-32
57	23
58	32
59	1
60	12
61	1
62	34
63	-31
64	-61
65	19
66	78
67	1
68	-14
69	27
70	74
71	1
72	-60
73	1
74	40
75	-51
76	-16
77	19
78	90
79	1
80	-62
81	-77
82	44
83	1
84	12
85	23
86	46