A058208 - cp's OEIS frontend

A058208 a(n) = floor(6nsqrt(n)/Pi^2) - sigma(n), where sigma(n) is the sum of the divisors of n (A000203).

n	a(n)
1	-1
2	-2
3	-1
4	-3
5	0
6	-4
7	3
8	-2
9	3
10	1
11	10
12	-3
13	14
14	7
15	11
16	7
17	24
18	7
19	30
20	12
21	26
22	26
23	43
24	11
25	44
26	38
27	45
28	34
29	64
30	27
31	72
32	47
33	67
34	66
35	77
36	40
37	98
38	82
39	92
40	63
41	117
42	69
43	127
44	93
45	105
46	117
47	147
48	78
49	151
50	121
51	149
52	129
53	180
54	121
55	175
56	134
57	181
58	178
59	215
60	114
61	227
62	200

[-1, -2, -1, -3, 0, -4, 3, -2, 3, 1, 10, -3, 14, 7, 11, 7, 24, 7, 30, 12, 26, 26, 43, 11, 44, 38, 45, 34, 64, 27, 72, 47, 67, 66, 77, 40, 98, 82, 92, 63, 117, 69, 127, 93, 105, 117, 147, 78, 151, 121, 149, 129, 180, 121, 175, 134, 181, 178, 215, 114, 227, 200]

cp's OEIS Frontend

A058208 a(n) = floor(6nsqrt(n)/Pi^2) - sigma(n), where sigma(n) is the sum of the divisors of n (A000203).

Table of values

List of values

n	a(n)
1	-1
2	-2
3	-1
4	-3
5	0
6	-4
7	3
8	-2
9	3
10	1
11	10
12	-3
13	14
14	7
15	11
16	7
17	24
18	7
19	30
20	12
21	26
22	26
23	43
24	11
25	44
26	38
27	45
28	34
29	64
30	27
31	72
32	47
33	67
34	66
35	77
36	40
37	98
38	82
39	92
40	63
41	117
42	69
43	127
44	93
45	105
46	117
47	147
48	78
49	151
50	121
51	149
52	129
53	180
54	121
55	175
56	134
57	181
58	178
59	215
60	114
61	227
62	200

n	a(n)
1	-1
2	-2
3	-1
4	-3
5	0
6	-4
7	3
8	-2
9	3
10	1
11	10
12	-3
13	14
14	7
15	11
16	7
17	24
18	7
19	30
20	12
21	26
22	26
23	43
24	11
25	44
26	38
27	45
28	34
29	64
30	27
31	72
32	47
33	67
34	66
35	77
36	40
37	98
38	82
39	92
40	63
41	117
42	69
43	127
44	93
45	105
46	117
47	147
48	78
49	151
50	121
51	149
52	129
53	180
54	121
55	175
56	134
57	181
58	178
59	215
60	114
61	227
62	200

cp's OEIS Frontend

A058208 a(n) = floor(6*n*sqrt(n)/Pi^2) - sigma(n), where sigma(n) is the sum of the divisors of n (A000203).

Table of values

List of values

A058208 a(n) = floor(6nsqrt(n)/Pi^2) - sigma(n), where sigma(n) is the sum of the divisors of n (A000203).

n	a(n)
1	-1
2	-2
3	-1
4	-3
5	0
6	-4
7	3
8	-2
9	3
10	1
11	10
12	-3
13	14
14	7
15	11
16	7
17	24
18	7
19	30
20	12
21	26
22	26
23	43
24	11
25	44
26	38
27	45
28	34
29	64
30	27
31	72
32	47
33	67
34	66
35	77
36	40
37	98
38	82
39	92
40	63
41	117
42	69
43	127
44	93
45	105
46	117
47	147
48	78
49	151
50	121
51	149
52	129
53	180
54	121
55	175
56	134
57	181
58	178
59	215
60	114
61	227
62	200