A055742 - cp's OEIS frontend

A055742 Numbers k such that k and EulerPhi(k) have same number of prime factors, counted without multiplicity.

n	a(n)
1	1
2	3
3	4
4	5
5	8
6	14
7	16
8	17
9	18
10	21
11	22
12	26
13	28
14	32
15	33
16	35
17	36
18	38
19	39
20	44
21	45
22	46
23	50
24	52
25	54
26	55
27	56
28	57
29	58
30	63
31	64
32	65
33	69
34	72
35	74
36	75
37	76
38	82
39	87
40	88
41	91
42	92
43	94
44	95
45	100
46	104
47	106
48	108
49	111
50	112
51	115
52	116
53	117
54	118
55	119
56	123
57	128
58	133
59	135
60	141
61	144
62	145
63	146
64	148

[1, 3, 4, 5, 8, 14, 16, 17, 18, 21, 22, 26, 28, 32, 33, 35, 36, 38, 39, 44, 45, 46, 50, 52, 54, 55, 56, 57, 58, 63, 64, 65, 69, 72, 74, 75, 76, 82, 87, 88, 91, 92, 94, 95, 100, 104, 106, 108, 111, 112, 115, 116, 117, 118, 119, 123, 128, 133, 135, 141, 144, 145, 146, 148]

cp's OEIS Frontend

A055742 Numbers k such that k and EulerPhi(k) have same number of prime factors, counted without multiplicity.

Table of values

List of values

n	a(n)
1	1
2	3
3	4
4	5
5	8
6	14
7	16
8	17
9	18
10	21
11	22
12	26
13	28
14	32
15	33
16	35
17	36
18	38
19	39
20	44
21	45
22	46
23	50
24	52
25	54
26	55
27	56
28	57
29	58
30	63
31	64
32	65
33	69
34	72
35	74
36	75
37	76
38	82
39	87
40	88
41	91
42	92
43	94
44	95
45	100
46	104
47	106
48	108
49	111
50	112
51	115
52	116
53	117
54	118
55	119
56	123
57	128
58	133
59	135
60	141
61	144
62	145
63	146
64	148

n	a(n)
1	1
2	3
3	4
4	5
5	8
6	14
7	16
8	17
9	18
10	21
11	22
12	26
13	28
14	32
15	33
16	35
17	36
18	38
19	39
20	44
21	45
22	46
23	50
24	52
25	54
26	55
27	56
28	57
29	58
30	63
31	64
32	65
33	69
34	72
35	74
36	75
37	76
38	82
39	87
40	88
41	91
42	92
43	94
44	95
45	100
46	104
47	106
48	108
49	111
50	112
51	115
52	116
53	117
54	118
55	119
56	123
57	128
58	133
59	135
60	141
61	144
62	145
63	146
64	148

n	a(n)
1	1
2	3
3	4
4	5
5	8
6	14
7	16
8	17
9	18
10	21
11	22
12	26
13	28
14	32
15	33
16	35
17	36
18	38
19	39
20	44
21	45
22	46
23	50
24	52
25	54
26	55
27	56
28	57
29	58
30	63
31	64
32	65
33	69
34	72
35	74
36	75
37	76
38	82
39	87
40	88
41	91
42	92
43	94
44	95
45	100
46	104
47	106
48	108
49	111
50	112
51	115
52	116
53	117
54	118
55	119
56	123
57	128
58	133
59	135
60	141
61	144
62	145
63	146
64	148