A087270 - cp's OEIS frontend

A087270 Solutions to gcd(x,pi(x)) = gcd(x, A000720(x)) > 1. Numbers x such that x and pi(x) have common divisor larger than one.

n	a(n)
1	4
2	6
3	8
4	10
5	14
6	15
7	16
8	20
9	22
10	24
11	27
12	30
13	33
14	38
15	39
16	40
17	44
18	46
19	48
20	50
21	51
22	54
23	56
24	58
25	62
26	63
27	64
28	66
29	72
30	75
31	77
32	78
33	80
34	82
35	90
36	92
37	93
38	94
39	96
40	100
41	102
42	105
43	108
44	114
45	115
46	116
47	117
48	118
49	120
50	122
51	123
52	124
53	125
54	126
55	132
56	134
57	136
58	138
59	140
60	142
61	144
62	146

[4, 6, 8, 10, 14, 15, 16, 20, 22, 24, 27, 30, 33, 38, 39, 40, 44, 46, 48, 50, 51, 54, 56, 58, 62, 63, 64, 66, 72, 75, 77, 78, 80, 82, 90, 92, 93, 94, 96, 100, 102, 105, 108, 114, 115, 116, 117, 118, 120, 122, 123, 124, 125, 126, 132, 134, 136, 138, 140, 142, 144, 146]

cp's OEIS Frontend

A087270 Solutions to gcd(x,pi(x)) = gcd(x, A000720(x)) > 1. Numbers x such that x and pi(x) have common divisor larger than one.

Table of values

List of values

n	a(n)
1	4
2	6
3	8
4	10
5	14
6	15
7	16
8	20
9	22
10	24
11	27
12	30
13	33
14	38
15	39
16	40
17	44
18	46
19	48
20	50
21	51
22	54
23	56
24	58
25	62
26	63
27	64
28	66
29	72
30	75
31	77
32	78
33	80
34	82
35	90
36	92
37	93
38	94
39	96
40	100
41	102
42	105
43	108
44	114
45	115
46	116
47	117
48	118
49	120
50	122
51	123
52	124
53	125
54	126
55	132
56	134
57	136
58	138
59	140
60	142
61	144
62	146

n	a(n)
1	4
2	6
3	8
4	10
5	14
6	15
7	16
8	20
9	22
10	24
11	27
12	30
13	33
14	38
15	39
16	40
17	44
18	46
19	48
20	50
21	51
22	54
23	56
24	58
25	62
26	63
27	64
28	66
29	72
30	75
31	77
32	78
33	80
34	82
35	90
36	92
37	93
38	94
39	96
40	100
41	102
42	105
43	108
44	114
45	115
46	116
47	117
48	118
49	120
50	122
51	123
52	124
53	125
54	126
55	132
56	134
57	136
58	138
59	140
60	142
61	144
62	146

n	a(n)
1	4
2	6
3	8
4	10
5	14
6	15
7	16
8	20
9	22
10	24
11	27
12	30
13	33
14	38
15	39
16	40
17	44
18	46
19	48
20	50
21	51
22	54
23	56
24	58
25	62
26	63
27	64
28	66
29	72
30	75
31	77
32	78
33	80
34	82
35	90
36	92
37	93
38	94
39	96
40	100
41	102
42	105
43	108
44	114
45	115
46	116
47	117
48	118
49	120
50	122
51	123
52	124
53	125
54	126
55	132
56	134
57	136
58	138
59	140
60	142
61	144
62	146