A006073 - cp's OEIS frontend

A006073 Numbers k such that k, k+1 and k+2 all have the same number of distinct prime divisors.

n	a(n)
1	2
2	3
3	7
4	20
5	33
6	34
7	38
8	44
9	50
10	54
11	55
12	56
13	74
14	75
15	85
16	86
17	91
18	92
19	93
20	94
21	98
22	115
23	116
24	117
25	122
26	133
27	134
28	141
29	142
30	143
31	144
32	145
33	146
34	158
35	159
36	160
37	175
38	176
39	183
40	187
41	200
42	201
43	205
44	206
45	207
46	212
47	213
48	214
49	215
50	216
51	217
52	224
53	235
54	247

[2, 3, 7, 20, 33, 34, 38, 44, 50, 54, 55, 56, 74, 75, 85, 86, 91, 92, 93, 94, 98, 115, 116, 117, 122, 133, 134, 141, 142, 143, 144, 145, 146, 158, 159, 160, 175, 176, 183, 187, 200, 201, 205, 206, 207, 212, 213, 214, 215, 216, 217, 224, 235, 247]

cp's OEIS Frontend

A006073 Numbers k such that k, k+1 and k+2 all have the same number of distinct prime divisors.

Table of values

List of values

n	a(n)
1	2
2	3
3	7
4	20
5	33
6	34
7	38
8	44
9	50
10	54
11	55
12	56
13	74
14	75
15	85
16	86
17	91
18	92
19	93
20	94
21	98
22	115
23	116
24	117
25	122
26	133
27	134
28	141
29	142
30	143
31	144
32	145
33	146
34	158
35	159
36	160
37	175
38	176
39	183
40	187
41	200
42	201
43	205
44	206
45	207
46	212
47	213
48	214
49	215
50	216
51	217
52	224
53	235
54	247

n	a(n)
1	2
2	3
3	7
4	20
5	33
6	34
7	38
8	44
9	50
10	54
11	55
12	56
13	74
14	75
15	85
16	86
17	91
18	92
19	93
20	94
21	98
22	115
23	116
24	117
25	122
26	133
27	134
28	141
29	142
30	143
31	144
32	145
33	146
34	158
35	159
36	160
37	175
38	176
39	183
40	187
41	200
42	201
43	205
44	206
45	207
46	212
47	213
48	214
49	215
50	216
51	217
52	224
53	235
54	247

n	a(n)
1	2
2	3
3	7
4	20
5	33
6	34
7	38
8	44
9	50
10	54
11	55
12	56
13	74
14	75
15	85
16	86
17	91
18	92
19	93
20	94
21	98
22	115
23	116
24	117
25	122
26	133
27	134
28	141
29	142
30	143
31	144
32	145
33	146
34	158
35	159
36	160
37	175
38	176
39	183
40	187
41	200
42	201
43	205
44	206
45	207
46	212
47	213
48	214
49	215
50	216
51	217
52	224
53	235
54	247