A326058 - cp's OEIS frontend

A326058 a(n) = n - {the sum of square divisors of n}.

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

[0, 1, 2, -1, 4, 5, 6, 3, -1, 9, 10, 7, 12, 13, 14, -5, 16, 8, 18, 15, 20, 21, 22, 19, -1, 25, 17, 23, 28, 29, 30, 11, 32, 33, 34, -14, 36, 37, 38, 35, 40, 41, 42, 39, 35, 45, 46, 27, -1, 24, 50, 47, 52, 44, 54, 51, 56, 57, 58, 55, 60, 61, 53, -21, 64, 65, 66, 63, 68, 69, 70, 22, 72, 73, 49, 71, 76, 77, 78, 59, -10, 81, 82, 79]

cp's OEIS Frontend

A326058 a(n) = n - {the sum of square divisors of n}.

Table of values

List of values

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

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

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