A236025 - cp's OEIS frontend

A236025 Composite numbers n sorted by increasing values of delta(n) = (n+1)^(1/2) - sigma(n)^(1/tau(n)), where sigma(n) = A000203(n) = the sum of divisors of n and tau(n) = A000005(n) = the number of divisors of n.

n	a(n)
1	4
2	6
3	9
4	8
5	10
6	14
7	15
8	12
9	25
10	16
11	21
12	22
13	18
14	26
15	20
16	27
17	33
18	34
19	49
20	24
21	35
22	28
23	38
24	39
25	32
26	30
27	46
28	51
29	36
30	55
31	58
32	44
33	57
34	40
35	45
36	42
37	62
38	50
39	65
40	52
41	69
42	48
43	74
44	54
45	77
46	56
47	82
48	63
49	86
50	121
51	85
52	64
53	68
54	87
55	60
56	94
57	66
58	93
59	91
60	81
61	75
62	95
63	76
64	70
65	106
66	78

[4, 6, 9, 8, 10, 14, 15, 12, 25, 16, 21, 22, 18, 26, 20, 27, 33, 34, 49, 24, 35, 28, 38, 39, 32, 30, 46, 51, 36, 55, 58, 44, 57, 40, 45, 42, 62, 50, 65, 52, 69, 48, 74, 54, 77, 56, 82, 63, 86, 121, 85, 64, 68, 87, 60, 94, 66, 93, 91, 81, 75, 95, 76, 70, 106, 78]

cp's OEIS Frontend

A236025 Composite numbers n sorted by increasing values of delta(n) = (n+1)^(1/2) - sigma(n)^(1/tau(n)), where sigma(n) = A000203(n) = the sum of divisors of n and tau(n) = A000005(n) = the number of divisors of n.

Table of values

List of values

n	a(n)
1	4
2	6
3	9
4	8
5	10
6	14
7	15
8	12
9	25
10	16
11	21
12	22
13	18
14	26
15	20
16	27
17	33
18	34
19	49
20	24
21	35
22	28
23	38
24	39
25	32
26	30
27	46
28	51
29	36
30	55
31	58
32	44
33	57
34	40
35	45
36	42
37	62
38	50
39	65
40	52
41	69
42	48
43	74
44	54
45	77
46	56
47	82
48	63
49	86
50	121
51	85
52	64
53	68
54	87
55	60
56	94
57	66
58	93
59	91
60	81
61	75
62	95
63	76
64	70
65	106
66	78

n	a(n)
1	4
2	6
3	9
4	8
5	10
6	14
7	15
8	12
9	25
10	16
11	21
12	22
13	18
14	26
15	20
16	27
17	33
18	34
19	49
20	24
21	35
22	28
23	38
24	39
25	32
26	30
27	46
28	51
29	36
30	55
31	58
32	44
33	57
34	40
35	45
36	42
37	62
38	50
39	65
40	52
41	69
42	48
43	74
44	54
45	77
46	56
47	82
48	63
49	86
50	121
51	85
52	64
53	68
54	87
55	60
56	94
57	66
58	93
59	91
60	81
61	75
62	95
63	76
64	70
65	106
66	78

n	a(n)
1	4
2	6
3	9
4	8
5	10
6	14
7	15
8	12
9	25
10	16
11	21
12	22
13	18
14	26
15	20
16	27
17	33
18	34
19	49
20	24
21	35
22	28
23	38
24	39
25	32
26	30
27	46
28	51
29	36
30	55
31	58
32	44
33	57
34	40
35	45
36	42
37	62
38	50
39	65
40	52
41	69
42	48
43	74
44	54
45	77
46	56
47	82
48	63
49	86
50	121
51	85
52	64
53	68
54	87
55	60
56	94
57	66
58	93
59	91
60	81
61	75
62	95
63	76
64	70
65	106
66	78