A123101 - cp's OEIS frontend

A123101 lambda(phi(n))=phi(lambda(n)) for the sequential application of Euler totient and Carmichael lambda functions.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	9
9	10
10	11
11	14
12	15
13	16
14	18
15	19
16	20
17	21
18	22
19	23
20	27
21	28
22	30
23	32
24	33
25	36
26	38
27	42
28	44
29	46
30	47
31	51
32	54
33	56
34	57
35	59
36	64
37	65
38	66
39	68
40	69
41	72
42	76
43	81
44	83
45	84
46	88
47	92
48	94
49	102
50	104
51	105
52	107
53	108
54	112
55	114
56	118
57	128
58	130
59	132
60	138
61	140
62	141
63	144
64	145
65	152
66	156

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 14, 15, 16, 18, 19, 20, 21, 22, 23, 27, 28, 30, 32, 33, 36, 38, 42, 44, 46, 47, 51, 54, 56, 57, 59, 64, 65, 66, 68, 69, 72, 76, 81, 83, 84, 88, 92, 94, 102, 104, 105, 107, 108, 112, 114, 118, 128, 130, 132, 138, 140, 141, 144, 145, 152, 156]

cp's OEIS Frontend

A123101 lambda(phi(n))=phi(lambda(n)) for the sequential application of Euler totient and Carmichael lambda functions.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	9
9	10
10	11
11	14
12	15
13	16
14	18
15	19
16	20
17	21
18	22
19	23
20	27
21	28
22	30
23	32
24	33
25	36
26	38
27	42
28	44
29	46
30	47
31	51
32	54
33	56
34	57
35	59
36	64
37	65
38	66
39	68
40	69
41	72
42	76
43	81
44	83
45	84
46	88
47	92
48	94
49	102
50	104
51	105
52	107
53	108
54	112
55	114
56	118
57	128
58	130
59	132
60	138
61	140
62	141
63	144
64	145
65	152
66	156

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	9
9	10
10	11
11	14
12	15
13	16
14	18
15	19
16	20
17	21
18	22
19	23
20	27
21	28
22	30
23	32
24	33
25	36
26	38
27	42
28	44
29	46
30	47
31	51
32	54
33	56
34	57
35	59
36	64
37	65
38	66
39	68
40	69
41	72
42	76
43	81
44	83
45	84
46	88
47	92
48	94
49	102
50	104
51	105
52	107
53	108
54	112
55	114
56	118
57	128
58	130
59	132
60	138
61	140
62	141
63	144
64	145
65	152
66	156

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	9
9	10
10	11
11	14
12	15
13	16
14	18
15	19
16	20
17	21
18	22
19	23
20	27
21	28
22	30
23	32
24	33
25	36
26	38
27	42
28	44
29	46
30	47
31	51
32	54
33	56
34	57
35	59
36	64
37	65
38	66
39	68
40	69
41	72
42	76
43	81
44	83
45	84
46	88
47	92
48	94
49	102
50	104
51	105
52	107
53	108
54	112
55	114
56	118
57	128
58	130
59	132
60	138
61	140
62	141
63	144
64	145
65	152
66	156