A058209 - cp's OEIS frontend

A058209 a(n) = floor( exp(gamma) n log log n ) - sigma(n), where gamma is Euler's constant (A001620) and sigma(n) is sum of divisors of n (A000203).

n	a(n)
2	-5
3	-4
4	-5
5	-2
6	-6
7	0
8	-5
9	-1
10	-4
11	5
12	-9
13	7
14	0
15	2
16	-2
17	13
18	-5
19	16
20	-3
21	9
22	8
23	22
24	-11
25	21
26	12
27	17
28	4
29	32
30	-7
31	36
32	7
33	25
34	22
35	31
36	-10
37	46
38	27
39	34
40	2
41	53
42	2
43	57
44	20
45	29
46	37
47	64
48	-9
49	61
50	28
51	52
52	29
53	76
54	13
55	63
56	18
57	61
58	54
59	87
60	-18
61	91
62	60
63	55
64	35
65	81
66	24
67	103
68	48
69	81
70	36
71	111
72	-9
73	115

[-5, -4, -5, -2, -6, 0, -5, -1, -4, 5, -9, 7, 0, 2, -2, 13, -5, 16, -3, 9, 8, 22, -11, 21, 12, 17, 4, 32, -7, 36, 7, 25, 22, 31, -10, 46, 27, 34, 2, 53, 2, 57, 20, 29, 37, 64, -9, 61, 28, 52, 29, 76, 13, 63, 18, 61, 54, 87, -18, 91, 60, 55, 35, 81, 24, 103, 48, 81, 36, 111, -9, 115]

cp's OEIS Frontend

A058209 a(n) = floor( exp(gamma) n log log n ) - sigma(n), where gamma is Euler's constant (A001620) and sigma(n) is sum of divisors of n (A000203).

Table of values

List of values

n	a(n)
2	-5
3	-4
4	-5
5	-2
6	-6
7	0
8	-5
9	-1
10	-4
11	5
12	-9
13	7
14	0
15	2
16	-2
17	13
18	-5
19	16
20	-3
21	9
22	8
23	22
24	-11
25	21
26	12
27	17
28	4
29	32
30	-7
31	36
32	7
33	25
34	22
35	31
36	-10
37	46
38	27
39	34
40	2
41	53
42	2
43	57
44	20
45	29
46	37
47	64
48	-9
49	61
50	28
51	52
52	29
53	76
54	13
55	63
56	18
57	61
58	54
59	87
60	-18
61	91
62	60
63	55
64	35
65	81
66	24
67	103
68	48
69	81
70	36
71	111
72	-9
73	115

n	a(n)
2	-5
3	-4
4	-5
5	-2
6	-6
7	0
8	-5
9	-1
10	-4
11	5
12	-9
13	7
14	0
15	2
16	-2
17	13
18	-5
19	16
20	-3
21	9
22	8
23	22
24	-11
25	21
26	12
27	17
28	4
29	32
30	-7
31	36
32	7
33	25
34	22
35	31
36	-10
37	46
38	27
39	34
40	2
41	53
42	2
43	57
44	20
45	29
46	37
47	64
48	-9
49	61
50	28
51	52
52	29
53	76
54	13
55	63
56	18
57	61
58	54
59	87
60	-18
61	91
62	60
63	55
64	35
65	81
66	24
67	103
68	48
69	81
70	36
71	111
72	-9
73	115

n	a(n)
2	-5
3	-4
4	-5
5	-2
6	-6
7	0
8	-5
9	-1
10	-4
11	5
12	-9
13	7
14	0
15	2
16	-2
17	13
18	-5
19	16
20	-3
21	9
22	8
23	22
24	-11
25	21
26	12
27	17
28	4
29	32
30	-7
31	36
32	7
33	25
34	22
35	31
36	-10
37	46
38	27
39	34
40	2
41	53
42	2
43	57
44	20
45	29
46	37
47	64
48	-9
49	61
50	28
51	52
52	29
53	76
54	13
55	63
56	18
57	61
58	54
59	87
60	-18
61	91
62	60
63	55
64	35
65	81
66	24
67	103
68	48
69	81
70	36
71	111
72	-9
73	115