A063464 - cp's OEIS frontend

A063464 Numbers k such that omega(k) = omega(k+2), where omega(k) is the number of distinct prime divisors of k.

n	a(n)
1	2
2	3
3	5
4	7
5	9
6	10
7	11
8	12
9	17
10	18
11	20
12	22
13	23
14	24
15	25
16	26
17	27
18	29
19	33
20	34
21	36
22	38
23	41
24	44
25	46
26	47
27	48
28	50
29	52
30	54
31	55
32	56
33	59
34	63
35	71
36	72
37	74
38	75
39	79
40	80
41	81
42	85
43	86
44	91
45	92
46	93
47	94
48	96
49	98
50	101
51	104
52	106
53	107
54	115
55	116
56	117
57	122
58	125
59	130
60	133
61	134
62	137
63	138
64	141
65	142

[2, 3, 5, 7, 9, 10, 11, 12, 17, 18, 20, 22, 23, 24, 25, 26, 27, 29, 33, 34, 36, 38, 41, 44, 46, 47, 48, 50, 52, 54, 55, 56, 59, 63, 71, 72, 74, 75, 79, 80, 81, 85, 86, 91, 92, 93, 94, 96, 98, 101, 104, 106, 107, 115, 116, 117, 122, 125, 130, 133, 134, 137, 138, 141, 142]

cp's OEIS Frontend

A063464 Numbers k such that omega(k) = omega(k+2), where omega(k) is the number of distinct prime divisors of k.

Table of values

List of values

n	a(n)
1	2
2	3
3	5
4	7
5	9
6	10
7	11
8	12
9	17
10	18
11	20
12	22
13	23
14	24
15	25
16	26
17	27
18	29
19	33
20	34
21	36
22	38
23	41
24	44
25	46
26	47
27	48
28	50
29	52
30	54
31	55
32	56
33	59
34	63
35	71
36	72
37	74
38	75
39	79
40	80
41	81
42	85
43	86
44	91
45	92
46	93
47	94
48	96
49	98
50	101
51	104
52	106
53	107
54	115
55	116
56	117
57	122
58	125
59	130
60	133
61	134
62	137
63	138
64	141
65	142

n	a(n)
1	2
2	3
3	5
4	7
5	9
6	10
7	11
8	12
9	17
10	18
11	20
12	22
13	23
14	24
15	25
16	26
17	27
18	29
19	33
20	34
21	36
22	38
23	41
24	44
25	46
26	47
27	48
28	50
29	52
30	54
31	55
32	56
33	59
34	63
35	71
36	72
37	74
38	75
39	79
40	80
41	81
42	85
43	86
44	91
45	92
46	93
47	94
48	96
49	98
50	101
51	104
52	106
53	107
54	115
55	116
56	117
57	122
58	125
59	130
60	133
61	134
62	137
63	138
64	141
65	142

n	a(n)
1	2
2	3
3	5
4	7
5	9
6	10
7	11
8	12
9	17
10	18
11	20
12	22
13	23
14	24
15	25
16	26
17	27
18	29
19	33
20	34
21	36
22	38
23	41
24	44
25	46
26	47
27	48
28	50
29	52
30	54
31	55
32	56
33	59
34	63
35	71
36	72
37	74
38	75
39	79
40	80
41	81
42	85
43	86
44	91
45	92
46	93
47	94
48	96
49	98
50	101
51	104
52	106
53	107
54	115
55	116
56	117
57	122
58	125
59	130
60	133
61	134
62	137
63	138
64	141
65	142