A246372 - cp's OEIS frontend

A246372 Numbers n such that 2n-1 = product_{k >= 1} (p_k)^(c_k), then n <= product_{k >= 1} (p_{k-1})^(c_k), where p_k indicates the k-th prime, A000040(k).

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	9
8	10
9	12
10	15
11	16
12	19
13	20
14	21
15	22
16	24
17	25
18	26
19	27
20	29
21	30
22	31
23	33
24	34
25	35
26	36
27	37
28	40
29	42
30	44
31	45
32	46
33	47
34	48
35	49
36	51
37	52
38	54
39	55
40	56
41	57
42	60
43	62
44	64
45	65
46	66
47	67
48	69
49	70
50	71
51	72
52	75
53	76
54	78
55	79
56	80
57	81
58	82
59	84
60	85
61	87
62	89
63	90
64	91
65	92
66	93
67	96
68	97
69	99
70	100
71	101
72	102
73	103
74	105
75	106
76	107
77	108
78	109
79	110

[1, 2, 3, 4, 6, 7, 9, 10, 12, 15, 16, 19, 20, 21, 22, 24, 25, 26, 27, 29, 30, 31, 33, 34, 35, 36, 37, 40, 42, 44, 45, 46, 47, 48, 49, 51, 52, 54, 55, 56, 57, 60, 62, 64, 65, 66, 67, 69, 70, 71, 72, 75, 76, 78, 79, 80, 81, 82, 84, 85, 87, 89, 90, 91, 92, 93, 96, 97, 99, 100, 101, 102, 103, 105, 106, 107, 108, 109, 110]

cp's OEIS Frontend

A246372 Numbers n such that 2n-1 = product_{k >= 1} (p_k)^(c_k), then n <= product_{k >= 1} (p_{k-1})^(c_k), 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	4
5	6
6	7
7	9
8	10
9	12
10	15
11	16
12	19
13	20
14	21
15	22
16	24
17	25
18	26
19	27
20	29
21	30
22	31
23	33
24	34
25	35
26	36
27	37
28	40
29	42
30	44
31	45
32	46
33	47
34	48
35	49
36	51
37	52
38	54
39	55
40	56
41	57
42	60
43	62
44	64
45	65
46	66
47	67
48	69
49	70
50	71
51	72
52	75
53	76
54	78
55	79
56	80
57	81
58	82
59	84
60	85
61	87
62	89
63	90
64	91
65	92
66	93
67	96
68	97
69	99
70	100
71	101
72	102
73	103
74	105
75	106
76	107
77	108
78	109
79	110

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	9
8	10
9	12
10	15
11	16
12	19
13	20
14	21
15	22
16	24
17	25
18	26
19	27
20	29
21	30
22	31
23	33
24	34
25	35
26	36
27	37
28	40
29	42
30	44
31	45
32	46
33	47
34	48
35	49
36	51
37	52
38	54
39	55
40	56
41	57
42	60
43	62
44	64
45	65
46	66
47	67
48	69
49	70
50	71
51	72
52	75
53	76
54	78
55	79
56	80
57	81
58	82
59	84
60	85
61	87
62	89
63	90
64	91
65	92
66	93
67	96
68	97
69	99
70	100
71	101
72	102
73	103
74	105
75	106
76	107
77	108
78	109
79	110

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	9
8	10
9	12
10	15
11	16
12	19
13	20
14	21
15	22
16	24
17	25
18	26
19	27
20	29
21	30
22	31
23	33
24	34
25	35
26	36
27	37
28	40
29	42
30	44
31	45
32	46
33	47
34	48
35	49
36	51
37	52
38	54
39	55
40	56
41	57
42	60
43	62
44	64
45	65
46	66
47	67
48	69
49	70
50	71
51	72
52	75
53	76
54	78
55	79
56	80
57	81
58	82
59	84
60	85
61	87
62	89
63	90
64	91
65	92
66	93
67	96
68	97
69	99
70	100
71	101
72	102
73	103
74	105
75	106
76	107
77	108
78	109
79	110