A071349 - cp's OEIS frontend

A071349 Numbers k for which the GCD of the k-th primorial number and its totient (A058250) sets record.

n	a(n)
1	1
2	2
3	4
4	5
5	9
6	10
7	15
8	16
9	17
10	23
11	27
12	28
13	35
14	39
15	40
16	41
17	43
18	49
19	56
20	57
21	61
22	62
23	64
24	66
25	69
26	72
27	73
28	76
29	77
30	91
31	92
32	96
33	97
34	102
35	103
36	104
37	107
38	111
39	114
40	117
41	119
42	127
43	128
44	137
45	139
46	143
47	146
48	150
49	154
50	155
51	166
52	171
53	181
54	182
55	186
56	195
57	196
58	201
59	208
60	214
61	215

[1, 2, 4, 5, 9, 10, 15, 16, 17, 23, 27, 28, 35, 39, 40, 41, 43, 49, 56, 57, 61, 62, 64, 66, 69, 72, 73, 76, 77, 91, 92, 96, 97, 102, 103, 104, 107, 111, 114, 117, 119, 127, 128, 137, 139, 143, 146, 150, 154, 155, 166, 171, 181, 182, 186, 195, 196, 201, 208, 214, 215]

cp's OEIS Frontend

A071349 Numbers k for which the GCD of the k-th primorial number and its totient (A058250) sets record.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	5
5	9
6	10
7	15
8	16
9	17
10	23
11	27
12	28
13	35
14	39
15	40
16	41
17	43
18	49
19	56
20	57
21	61
22	62
23	64
24	66
25	69
26	72
27	73
28	76
29	77
30	91
31	92
32	96
33	97
34	102
35	103
36	104
37	107
38	111
39	114
40	117
41	119
42	127
43	128
44	137
45	139
46	143
47	146
48	150
49	154
50	155
51	166
52	171
53	181
54	182
55	186
56	195
57	196
58	201
59	208
60	214
61	215

n	a(n)
1	1
2	2
3	4
4	5
5	9
6	10
7	15
8	16
9	17
10	23
11	27
12	28
13	35
14	39
15	40
16	41
17	43
18	49
19	56
20	57
21	61
22	62
23	64
24	66
25	69
26	72
27	73
28	76
29	77
30	91
31	92
32	96
33	97
34	102
35	103
36	104
37	107
38	111
39	114
40	117
41	119
42	127
43	128
44	137
45	139
46	143
47	146
48	150
49	154
50	155
51	166
52	171
53	181
54	182
55	186
56	195
57	196
58	201
59	208
60	214
61	215

n	a(n)
1	1
2	2
3	4
4	5
5	9
6	10
7	15
8	16
9	17
10	23
11	27
12	28
13	35
14	39
15	40
16	41
17	43
18	49
19	56
20	57
21	61
22	62
23	64
24	66
25	69
26	72
27	73
28	76
29	77
30	91
31	92
32	96
33	97
34	102
35	103
36	104
37	107
38	111
39	114
40	117
41	119
42	127
43	128
44	137
45	139
46	143
47	146
48	150
49	154
50	155
51	166
52	171
53	181
54	182
55	186
56	195
57	196
58	201
59	208
60	214
61	215