A282391 - cp's OEIS frontend

A282391 Numbers j such that d(j) = d(j + 3*d(j)), where d(j) is the number of divisors of j.

n	a(n)
1	5
2	7
3	10
4	11
5	13
6	14
7	15
8	17
9	21
10	22
11	23
12	26
13	27
14	30
15	31
16	32
17	34
18	37
19	39
20	41
21	42
22	45
23	46
24	47
25	50
26	53
27	54
28	57
29	60
30	61
31	62
32	65
33	67
34	72
35	73
36	74
37	78
38	82
39	83
40	90
41	94
42	96
43	97
44	98
45	99
46	101
47	103
48	104
49	106
50	107
51	111
52	114
53	120
54	122
55	128
56	129
57	130
58	131
59	133
60	134
61	143

[5, 7, 10, 11, 13, 14, 15, 17, 21, 22, 23, 26, 27, 30, 31, 32, 34, 37, 39, 41, 42, 45, 46, 47, 50, 53, 54, 57, 60, 61, 62, 65, 67, 72, 73, 74, 78, 82, 83, 90, 94, 96, 97, 98, 99, 101, 103, 104, 106, 107, 111, 114, 120, 122, 128, 129, 130, 131, 133, 134, 143]

cp's OEIS Frontend

A282391 Numbers j such that d(j) = d(j + 3*d(j)), where d(j) is the number of divisors of j.

Table of values

List of values

n	a(n)
1	5
2	7
3	10
4	11
5	13
6	14
7	15
8	17
9	21
10	22
11	23
12	26
13	27
14	30
15	31
16	32
17	34
18	37
19	39
20	41
21	42
22	45
23	46
24	47
25	50
26	53
27	54
28	57
29	60
30	61
31	62
32	65
33	67
34	72
35	73
36	74
37	78
38	82
39	83
40	90
41	94
42	96
43	97
44	98
45	99
46	101
47	103
48	104
49	106
50	107
51	111
52	114
53	120
54	122
55	128
56	129
57	130
58	131
59	133
60	134
61	143

n	a(n)
1	5
2	7
3	10
4	11
5	13
6	14
7	15
8	17
9	21
10	22
11	23
12	26
13	27
14	30
15	31
16	32
17	34
18	37
19	39
20	41
21	42
22	45
23	46
24	47
25	50
26	53
27	54
28	57
29	60
30	61
31	62
32	65
33	67
34	72
35	73
36	74
37	78
38	82
39	83
40	90
41	94
42	96
43	97
44	98
45	99
46	101
47	103
48	104
49	106
50	107
51	111
52	114
53	120
54	122
55	128
56	129
57	130
58	131
59	133
60	134
61	143

n	a(n)
1	5
2	7
3	10
4	11
5	13
6	14
7	15
8	17
9	21
10	22
11	23
12	26
13	27
14	30
15	31
16	32
17	34
18	37
19	39
20	41
21	42
22	45
23	46
24	47
25	50
26	53
27	54
28	57
29	60
30	61
31	62
32	65
33	67
34	72
35	73
36	74
37	78
38	82
39	83
40	90
41	94
42	96
43	97
44	98
45	99
46	101
47	103
48	104
49	106
50	107
51	111
52	114
53	120
54	122
55	128
56	129
57	130
58	131
59	133
60	134
61	143