A246281 - cp's OEIS frontend

A246281 Numbers k for which A003961(k) < 2k; Numbers n such that if n = product_{k >= 1} (p_k)^(c_k), then product_{k >= 1} (p_{k+1})^(c_k) < 2n, where p_k indicates the k-th prime, A000040(k).

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	11
7	13
8	17
9	19
10	22
11	23
12	25
13	26
14	29
15	31
16	33
17	34
18	37
19	38
20	41
21	43
22	46
23	47
24	51
25	53
26	55
27	58
28	59
29	61
30	62
31	65
32	67
33	71
34	73
35	74
36	77
37	79
38	82
39	83
40	85
41	86
42	87
43	89
44	93
45	94
46	95
47	97
48	101
49	103
50	106
51	107
52	109
53	111
54	113
55	115
56	118
57	119
58	121
59	122
60	123
61	127
62	129
63	131
64	133
65	134
66	137
67	139

[1, 2, 3, 5, 7, 11, 13, 17, 19, 22, 23, 25, 26, 29, 31, 33, 34, 37, 38, 41, 43, 46, 47, 51, 53, 55, 58, 59, 61, 62, 65, 67, 71, 73, 74, 77, 79, 82, 83, 85, 86, 87, 89, 93, 94, 95, 97, 101, 103, 106, 107, 109, 111, 113, 115, 118, 119, 121, 122, 123, 127, 129, 131, 133, 134, 137, 139]

cp's OEIS Frontend

A246281 Numbers k for which A003961(k) < 2k; Numbers n such that if n = product_{k >= 1} (p_k)^(c_k), then product_{k >= 1} (p_{k+1})^(c_k) < 2n, where p_k indicates the k-th prime, A000040(k).

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	11
7	13
8	17
9	19
10	22
11	23
12	25
13	26
14	29
15	31
16	33
17	34
18	37
19	38
20	41
21	43
22	46
23	47
24	51
25	53
26	55
27	58
28	59
29	61
30	62
31	65
32	67
33	71
34	73
35	74
36	77
37	79
38	82
39	83
40	85
41	86
42	87
43	89
44	93
45	94
46	95
47	97
48	101
49	103
50	106
51	107
52	109
53	111
54	113
55	115
56	118
57	119
58	121
59	122
60	123
61	127
62	129
63	131
64	133
65	134
66	137
67	139

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	11
7	13
8	17
9	19
10	22
11	23
12	25
13	26
14	29
15	31
16	33
17	34
18	37
19	38
20	41
21	43
22	46
23	47
24	51
25	53
26	55
27	58
28	59
29	61
30	62
31	65
32	67
33	71
34	73
35	74
36	77
37	79
38	82
39	83
40	85
41	86
42	87
43	89
44	93
45	94
46	95
47	97
48	101
49	103
50	106
51	107
52	109
53	111
54	113
55	115
56	118
57	119
58	121
59	122
60	123
61	127
62	129
63	131
64	133
65	134
66	137
67	139

cp's OEIS Frontend

A246281 Numbers k for which A003961(k) < 2*k; Numbers n such that if n = product_{k >= 1} (p_k)^(c_k), then product_{k >= 1} (p_{k+1})^(c_k) < 2*n, where p_k indicates the k-th prime, A000040(k).

Table of values

List of values

A246281 Numbers k for which A003961(k) < 2k; Numbers n such that if n = product_{k >= 1} (p_k)^(c_k), then product_{k >= 1} (p_{k+1})^(c_k) < 2n, where p_k indicates the k-th prime, A000040(k).

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	11
7	13
8	17
9	19
10	22
11	23
12	25
13	26
14	29
15	31
16	33
17	34
18	37
19	38
20	41
21	43
22	46
23	47
24	51
25	53
26	55
27	58
28	59
29	61
30	62
31	65
32	67
33	71
34	73
35	74
36	77
37	79
38	82
39	83
40	85
41	86
42	87
43	89
44	93
45	94
46	95
47	97
48	101
49	103
50	106
51	107
52	109
53	111
54	113
55	115
56	118
57	119
58	121
59	122
60	123
61	127
62	129
63	131
64	133
65	134
66	137
67	139