A096887 - cp's OEIS frontend

A096887 Initial values for f(x)=phi(sigma(x)) such that iteration of f ends in cycle of length=2.

n	a(n)
1	4
2	6
3	7
4	10
5	11
6	13
7	17
8	32
9	36
10	42
11	48
12	49
13	50
14	52
15	54
16	56
17	57
18	60
19	62
20	63
21	64
22	66
23	67
24	68
25	69
26	70
27	72
28	73
29	74
30	75
31	76
32	77
33	78
34	79
35	80
36	81
37	82
38	84
39	85
40	87
41	88
42	90
43	91
44	92
45	93
46	94
47	95
48	96
49	97
50	98
51	99
52	100
53	101
54	102
55	103
56	104
57	105
58	106
59	107
60	108
61	110
62	111
63	112
64	113
65	114

[4, 6, 7, 10, 11, 13, 17, 32, 36, 42, 48, 49, 50, 52, 54, 56, 57, 60, 62, 63, 64, 66, 67, 68, 69, 70, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 84, 85, 87, 88, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 110, 111, 112, 113, 114]

cp's OEIS Frontend

A096887 Initial values for f(x)=phi(sigma(x)) such that iteration of f ends in cycle of length=2.

Table of values

List of values

n	a(n)
1	4
2	6
3	7
4	10
5	11
6	13
7	17
8	32
9	36
10	42
11	48
12	49
13	50
14	52
15	54
16	56
17	57
18	60
19	62
20	63
21	64
22	66
23	67
24	68
25	69
26	70
27	72
28	73
29	74
30	75
31	76
32	77
33	78
34	79
35	80
36	81
37	82
38	84
39	85
40	87
41	88
42	90
43	91
44	92
45	93
46	94
47	95
48	96
49	97
50	98
51	99
52	100
53	101
54	102
55	103
56	104
57	105
58	106
59	107
60	108
61	110
62	111
63	112
64	113
65	114

n	a(n)
1	4
2	6
3	7
4	10
5	11
6	13
7	17
8	32
9	36
10	42
11	48
12	49
13	50
14	52
15	54
16	56
17	57
18	60
19	62
20	63
21	64
22	66
23	67
24	68
25	69
26	70
27	72
28	73
29	74
30	75
31	76
32	77
33	78
34	79
35	80
36	81
37	82
38	84
39	85
40	87
41	88
42	90
43	91
44	92
45	93
46	94
47	95
48	96
49	97
50	98
51	99
52	100
53	101
54	102
55	103
56	104
57	105
58	106
59	107
60	108
61	110
62	111
63	112
64	113
65	114

n	a(n)
1	4
2	6
3	7
4	10
5	11
6	13
7	17
8	32
9	36
10	42
11	48
12	49
13	50
14	52
15	54
16	56
17	57
18	60
19	62
20	63
21	64
22	66
23	67
24	68
25	69
26	70
27	72
28	73
29	74
30	75
31	76
32	77
33	78
34	79
35	80
36	81
37	82
38	84
39	85
40	87
41	88
42	90
43	91
44	92
45	93
46	94
47	95
48	96
49	97
50	98
51	99
52	100
53	101
54	102
55	103
56	104
57	105
58	106
59	107
60	108
61	110
62	111
63	112
64	113
65	114