A071594 - cp's OEIS frontend

A071594 Numbers k such that the number of 1's in the binary representation of k equals omega(k), the number of distinct primes in the factorization of k.

n	a(n)
1	2
2	4
3	6
4	8
5	10
6	12
7	16
8	18
9	20
10	24
11	32
12	33
13	34
14	36
15	40
16	42
17	48
18	64
19	65
20	68
21	70
22	72
23	80
24	84
25	96
26	128
27	129
28	136
29	138
30	140
31	144
32	160
33	168
34	192
35	210
36	256
37	266
38	272
39	273
40	276
41	280
42	288
43	290
44	320
45	322
46	330
47	336
48	384
49	385
50	390
51	420
52	512
53	513
54	514
55	518
56	522
57	530
58	532

[2, 4, 6, 8, 10, 12, 16, 18, 20, 24, 32, 33, 34, 36, 40, 42, 48, 64, 65, 68, 70, 72, 80, 84, 96, 128, 129, 136, 138, 140, 144, 160, 168, 192, 210, 256, 266, 272, 273, 276, 280, 288, 290, 320, 322, 330, 336, 384, 385, 390, 420, 512, 513, 514, 518, 522, 530, 532]

cp's OEIS Frontend

A071594 Numbers k such that the number of 1's in the binary representation of k equals omega(k), the number of distinct primes in the factorization of k.

Table of values

List of values

n	a(n)
1	2
2	4
3	6
4	8
5	10
6	12
7	16
8	18
9	20
10	24
11	32
12	33
13	34
14	36
15	40
16	42
17	48
18	64
19	65
20	68
21	70
22	72
23	80
24	84
25	96
26	128
27	129
28	136
29	138
30	140
31	144
32	160
33	168
34	192
35	210
36	256
37	266
38	272
39	273
40	276
41	280
42	288
43	290
44	320
45	322
46	330
47	336
48	384
49	385
50	390
51	420
52	512
53	513
54	514
55	518
56	522
57	530
58	532

n	a(n)
1	2
2	4
3	6
4	8
5	10
6	12
7	16
8	18
9	20
10	24
11	32
12	33
13	34
14	36
15	40
16	42
17	48
18	64
19	65
20	68
21	70
22	72
23	80
24	84
25	96
26	128
27	129
28	136
29	138
30	140
31	144
32	160
33	168
34	192
35	210
36	256
37	266
38	272
39	273
40	276
41	280
42	288
43	290
44	320
45	322
46	330
47	336
48	384
49	385
50	390
51	420
52	512
53	513
54	514
55	518
56	522
57	530
58	532

n	a(n)
1	2
2	4
3	6
4	8
5	10
6	12
7	16
8	18
9	20
10	24
11	32
12	33
13	34
14	36
15	40
16	42
17	48
18	64
19	65
20	68
21	70
22	72
23	80
24	84
25	96
26	128
27	129
28	136
29	138
30	140
31	144
32	160
33	168
34	192
35	210
36	256
37	266
38	272
39	273
40	276
41	280
42	288
43	290
44	320
45	322
46	330
47	336
48	384
49	385
50	390
51	420
52	512
53	513
54	514
55	518
56	522
57	530
58	532