A368582 - cp's OEIS frontend

A368582 a(n) = floor((sigma(n) + 1) / 2).

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

[1, 2, 2, 4, 3, 6, 4, 8, 7, 9, 6, 14, 7, 12, 12, 16, 9, 20, 10, 21, 16, 18, 12, 30, 16, 21, 20, 28, 15, 36, 16, 32, 24, 27, 24, 46, 19, 30, 28, 45, 21, 48, 22, 42, 39, 36, 24, 62, 29, 47, 36, 49, 27, 60, 36, 60, 40, 45, 30, 84, 31, 48, 52, 64, 42, 72, 34, 63]

cp's OEIS Frontend

A368582 a(n) = floor((sigma(n) + 1) / 2).

Table of values

List of values

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

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

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