A139710 - cp's OEIS frontend

A139710 Numbers k such that the sum of (the largest divisor of k that is <= sqrt(k)) and (the smallest divisor of k that is >= sqrt(k)) is odd.

n	a(n)
1	2
2	6
3	10
4	12
5	14
6	18
7	20
8	22
9	26
10	28
11	30
12	34
13	38
14	40
15	42
16	44
17	46
18	50
19	52
20	54
21	56
22	58
23	62
24	66
25	68
26	70
27	72
28	74
29	76
30	78
31	82
32	84
33	86
34	88
35	90
36	92
37	94
38	98
39	102
40	104
41	106
42	108
43	110
44	114
45	116
46	118
47	122
48	124
49	126
50	130
51	132
52	134
53	136
54	138
55	142
56	146
57	148
58	150
59	152
60	154
61	156
62	158

[2, 6, 10, 12, 14, 18, 20, 22, 26, 28, 30, 34, 38, 40, 42, 44, 46, 50, 52, 54, 56, 58, 62, 66, 68, 70, 72, 74, 76, 78, 82, 84, 86, 88, 90, 92, 94, 98, 102, 104, 106, 108, 110, 114, 116, 118, 122, 124, 126, 130, 132, 134, 136, 138, 142, 146, 148, 150, 152, 154, 156, 158]

cp's OEIS Frontend

A139710 Numbers k such that the sum of (the largest divisor of k that is <= sqrt(k)) and (the smallest divisor of k that is >= sqrt(k)) is odd.

Table of values

List of values

n	a(n)
1	2
2	6
3	10
4	12
5	14
6	18
7	20
8	22
9	26
10	28
11	30
12	34
13	38
14	40
15	42
16	44
17	46
18	50
19	52
20	54
21	56
22	58
23	62
24	66
25	68
26	70
27	72
28	74
29	76
30	78
31	82
32	84
33	86
34	88
35	90
36	92
37	94
38	98
39	102
40	104
41	106
42	108
43	110
44	114
45	116
46	118
47	122
48	124
49	126
50	130
51	132
52	134
53	136
54	138
55	142
56	146
57	148
58	150
59	152
60	154
61	156
62	158

n	a(n)
1	2
2	6
3	10
4	12
5	14
6	18
7	20
8	22
9	26
10	28
11	30
12	34
13	38
14	40
15	42
16	44
17	46
18	50
19	52
20	54
21	56
22	58
23	62
24	66
25	68
26	70
27	72
28	74
29	76
30	78
31	82
32	84
33	86
34	88
35	90
36	92
37	94
38	98
39	102
40	104
41	106
42	108
43	110
44	114
45	116
46	118
47	122
48	124
49	126
50	130
51	132
52	134
53	136
54	138
55	142
56	146
57	148
58	150
59	152
60	154
61	156
62	158

n	a(n)
1	2
2	6
3	10
4	12
5	14
6	18
7	20
8	22
9	26
10	28
11	30
12	34
13	38
14	40
15	42
16	44
17	46
18	50
19	52
20	54
21	56
22	58
23	62
24	66
25	68
26	70
27	72
28	74
29	76
30	78
31	82
32	84
33	86
34	88
35	90
36	92
37	94
38	98
39	102
40	104
41	106
42	108
43	110
44	114
45	116
46	118
47	122
48	124
49	126
50	130
51	132
52	134
53	136
54	138
55	142
56	146
57	148
58	150
59	152
60	154
61	156
62	158